Alternative & migration · Internal Tools

Tarantula Alternatives for Tower and Site Portfolios: Switch, Stay, or Build

Internal Tools Development product interface illustration for Tarantula Alternatives for Tower and Site Portfolios.
The short answer

Stay on Tarantula if you run thousands of sites with layered tenant leases, escalations and revenue schedules, and you have no engineering team to own software: recreating that logic is a poor trade. Start looking if the platform now decides how your deals are shaped, and consider a custom build when your commercial model does not match the classic towerco pattern, where a focused build runs $45k to $110k in 10 to 16 weeks and a full site, lease and revenue platform runs $150k to $350k. Do not build if site administration is a back office chore rather than the business you are in.

Why teams start looking for a Tarantula alternative

The search usually begins at an escalation that was applied late, or a colocation application that took three weeks to clear because half the approval sat in email. Tower and site portfolios have an awkward shape. One physical structure carries several tenants, each on a separate contract, each with its own escalation clause, notice period, revenue schedule and ground lease sitting underneath. Tarantula was built for that shape, which is exactly why operators buy it. The reason they start shopping is rarely that it broke. It is that the portfolio changed and the configuration did not follow. You added fixed wireless tenants, or rooftops with revenue share landlords, or a build to suit programme that now lives half in the platform and half in a shared drive.

The second trigger is reporting. Someone in finance wants tenant revenue by site, by market, by escalation type, next to ground rent and pass through costs, and that view gets rebuilt by hand every quarter because pulling it out of the system in the right shape is slower than exporting and starting again in a spreadsheet. The third trigger is renewal season, when you compare what you pay against how much of the platform your team touches on a normal Tuesday.

What Tarantula genuinely gets right

Give it credit where it is due. The relationship between a site, its structure, its ground lease, its tenants and their amendments is genuinely hard to model, and most generic systems mangle it. Property tools treat the site as one lease. Asset tools ignore the contract. Spreadsheets lose the amendment history that decides who owes what after a fifth carrier adds antennas. A platform designed around tower estates holds all of that in one record, tracks the money in both directions, and gives an auditor a trail that stands up.

It also handles the operational side that towercos actually live in: colocation applications moving through structural analysis and approval, site access, notice tracking, and multi country portfolios where lease law and currency differ by market. If your business is owning and leasing vertical real estate, a purpose built system for it is not an indulgence. It is the reason you can close month end without a war room.

Where it starts to strain

Strain shows up in three predictable places, and none of them are unique to this vendor. The first is the configuration ceiling. Every vertical platform encodes a view of how the business runs, and yours will eventually differ. Neutral host arrangements, in building systems, small cell licences with municipal fee schedules, energy resale to tenants, revenue share with landlords: each one is a variation on the tenancy model, and the further you get from the classic macro tower with three carriers, the more you find yourself using a field for something it was not named for.

The second is integration burden. A site record is only half your operating picture. The other half sits in your accounting system, your field maintenance tools, your GIS layer and your document store. Every integration is a project with an owner, and when the platform is the system of record for revenue, the mapping between its structures and your general ledger is a permanent piece of maintenance rather than a one off.

The third is reporting rigidity, which is the quiet one. Standard reports cover standard questions. The question your board asks is usually not standard, and answering it means a request to the vendor, an export, or a analyst rebuilding a model. Over years, that pattern quietly moves the real source of truth into spreadsheets that nobody audits.

Your realistic options, including staying put

Option one is staying and fixing the configuration. This is underrated. A large share of the frustration in site management platforms comes from a rushed implementation: fields used inconsistently across markets, lease abstraction done at speed, workflows that were never revisited after go live. A focused data cleanup and reconfiguration project costs a fraction of a migration and removes most of the daily pain. If your complaint is that reports are wrong rather than that the model cannot express your business, fix the data before you fix the vendor.

Option two is another platform. Sitetracker is strong where deployment and project pipeline matter more than lease administration. Accruent Siterra and Accruent Lucernex come at the same problem from the asset and real estate side. CoStar Real Estate Manager and Visual Lease are built around lease accounting rather than site operations. Some operators run the whole thing on Salesforce or ServiceNow with a partner built layer on top. Each swap trades one set of constraints for another, so be precise about which constraint is actually hurting you.

Option three is a hybrid, and for asset heavy owners it is often the sensible one. Keep a lease and revenue engine for the contractual record, and build the operational layer, the pipeline view and the reporting on top of it. You are not rebuilding the risky part. You are removing the part that will not bend.

When a custom build actually pays back

A custom site and lease platform pays back when the way you structure deals is a competitive advantage rather than an administrative detail. Independent rooftop aggregators, neutral host operators, fibre and small cell owners with municipal agreements, and utilities monetising their own structures all tend to have commercial terms that no packaged product anticipated. If your team spends its week translating real deals into a data model that does not fit, you are paying twice: once in licence fees and once in the labour of the translation.

It also pays back when site data has to sit next to something else you own. If the same record needs to drive field crew dispatch, energy billing, tenant self service and investor reporting, a system you control turns four exports into one query. And it pays back when your portfolio is growing faster than your per site or per user commercial terms allow, because a build has a fixed cost plus hosting rather than a price that tracks your growth.

Do not build if your estate is stable, your tenancies are conventional, and nobody on your team wants to own software. In that case the packaged product is doing exactly the job it should.

Migration reality: the part people underestimate

Site data migration is a lease abstraction project wearing a technical costume. The work is not moving rows. It is confirming that the abstracted terms in the system match the signed documents, because a decade of amendments has a way of drifting from what the record says. Budget for a sample audit of contracts against the data before you move anything, and expect to find discrepancies. Better to find them during a migration than during due diligence on a portfolio sale.

Then plan the sequence. Export the full record set: sites, structures, ground leases, tenant agreements, amendments, escalations, revenue schedules, applications in flight and the document library attached to each. Load it, reconcile billing and rent runs against the incumbent system for at least two full cycles, and only cut over once the numbers match twice in a row. Keep the historic record in a read only archive so that lease history survives the change. Retraining is small if you keep the field names your team already uses, and large if you take the opportunity to rename everything at once, so do not.

Cost bands to plan against

Packaged platforms in this category are quoted, not published, and the number usually keys off site count, user count and modules. Expect a multi year term, an implementation fee that is a meaningful share of year one, and a price that moves as the portfolio grows.

On the build side, using what Digital Heroes typically delivers as the reference: a focused build, meaning the operational and reporting layer that sits on top of an existing lease or accounting engine, runs roughly $45k to $110k over 10 to 16 weeks. A full site, tenant, lease and revenue platform with document handling, escalation logic, application workflow and finance integration runs roughly $150k to $350k. Add hosting, which for an internal platform of this size is a few hundred dollars a month, and an ongoing maintenance allowance. Those are costs you own rather than rent, and they do not climb with your site count.

The honest verdict

If you are a towerco or carrier with a conventional macro estate, keep the packaged platform and spend your money on data quality instead. It is doing something specialised that is genuinely difficult to replicate, and a migration will consume a year of your team's attention for a modest gain. If your commercial model is unusual, if the software now shapes the deals you are willing to do, or if site operations are the product rather than the paperwork, build the layer that fits and keep a contractual engine underneath. The middle path is legitimate and most operators end up there: buy the compliance and contract record, own the workflow and the numbers you report on.

Research & sources

The evidence behind this guide

Independent findings on why this investment pays off. Every link goes to the primary source.

  1. The median annual wage for U.S. software developers was $133,080 in May 2024, and employment is projected to grow 15% from 2024 to 2034 - a core input to any in-house build-vs-buy TCO model. Source: U.S. Bureau of Labor Statistics (2024) →
  2. McKinsey found that tech debt can amount to 20-40% of the value of a company's entire technology estate before depreciation, and CIOs report that 10-20% of the budget for new products is diverted to resolving tech-debt issues. Source: McKinsey & Company (2020) →
  3. The NRF discontinued its long-running annual shrink report, stating that a broad study of retail shrink 'is no longer sufficient for capturing the key challenges and needs of the industry' - important context that qualifies how POS/shrink benchmarks should be cited going forward. Source: Retail Dive (2024) →
  4. In the Flexera 2025 State of ITAM report, respondents reported roughly 33% of SaaS spend is wasted, underscoring how paying for off-the-shelf seats and tiers that go unused erodes the supposed cost advantage of generic SaaS. Source: Flexera (2025) →
Mei L. · VP APAC · Sydney

Mei runs the APAC side of Digital Heroes from Sydney, where the work spans custom software, ERP and CRM builds, and commerce platforms. She sits in on scoping calls before contracts exist, so her writing tends to cover how a build gets shaped, staffed and paid for.

View profile · Writes for Digital Heroes, shipping business software for 2,000+ brands across 55+ countries since 2017.

FAQ

Frequently asked questions

What is the best alternative to Tarantula for tower site management?
There is no single best alternative, because the right choice depends on which part hurts. Sitetracker suits teams whose pain is deployment and project pipeline. Accruent Siterra and Lucernex lean toward asset and real estate management. If the problem is that your tenancy model does not fit any packaged product, a custom operational layer over a lease engine is usually the better answer.
Should I replace Tarantula or fix my configuration first?
Fix the configuration first in most cases. A large share of frustration with site management platforms comes from inconsistent fields, rushed lease abstraction and workflows nobody revisited after go live. A cleanup project costs far less than a migration, and if reports come out right afterwards, the platform was never the problem.
How much does a custom tower and site management platform cost?
A focused build that adds an operational and reporting layer on top of an existing lease or accounting engine typically runs $45k to $110k. A full platform covering sites, structures, tenants, amendments, escalations, revenue and applications runs $150k to $350k. Both are one time build costs plus hosting rather than a fee that grows with your site count.
How long does it take to migrate off a site management platform?
Plan for three to six months end to end for a mid sized portfolio, and most of that is not technical. Lease abstraction verification, reconciling rent and revenue runs, and two full parallel billing cycles take the time. The data load itself is usually the shortest part of the project.
When is it right to keep Tarantula?
Keep it when you run a conventional macro tower estate at scale, your tenancy structures are standard, audit trails matter, and you have no appetite to own software. The relationship between site, ground lease, tenants and amendments is genuinely hard to model, and rebuilding it for the sake of a cheaper invoice is rarely a good trade.
Can a custom system handle lease escalations and revenue schedules?
Yes, and the logic is well understood: indexation, fixed percentage increases, notice windows and revenue recognition rules are all expressible in code. The risk is not the maths, it is the completeness of the source data. Most teams keep an accounting engine for the ledger side and build the operational and reporting layer on top.
What data do I need to export before switching site management software?
Sites and structures, ground leases and landlord terms, tenant agreements and every amendment, escalation schedules, revenue and billing history, applications in flight, notice dates, and the full document library attached to each record. Export the audit trail too, because reconstructing who changed what later is close to impossible.
Is a custom build cheaper than a per site licence?
Not in year one. A build costs more up front and then flattens out, because your ongoing cost is hosting and maintenance rather than a fee tied to portfolio size. The crossover depends on how fast you are adding sites and how many modules you currently pay for, and it usually lands somewhere between the second and fourth year for growing portfolios.
Can I keep Tarantula for leases and build only the operational layer?
That hybrid is the most common sensible outcome. Keep the contractual and revenue record where it is, then build the pipeline view, field workflows, tenant self service and reporting you actually need on top through integration. You remove the rigid part without putting the audited part at risk.
How long does it take to build an internal tool from scratch?
A working first version typically ships in 4 to 8 weeks, and larger multi-module tools run 10 to 16 weeks. Across Digital Heroes internal tool projects the schedule splits into roughly one week of process mapping, 3 to 6 weeks of build, and 1 to 2 weeks of testing with your actual staff. The most common delay is not development but waiting on the client for sample data and workflow decisions, so name one internal owner before kickoff.
How do I know when spreadsheets are no longer enough to run my operations?
Replace the spreadsheet once more than three people edit it, versions travel by email, or a single broken formula could cost real money. Other reliable signals: staff keep personal shadow copies, month-end reporting takes days of manual assembly, and nobody can say who changed a number or why. In Digital Heroes discovery calls the tipping point is almost always a specific expensive error, a mispriced quote, a missed order, or payroll built on a tab someone sorted wrong.
At what point does Retool cost more than building a custom tool?
The crossover usually lands between 25 and 50 daily users. At Retool's published Business rates of $50 per standard user and $15 per end user monthly, a 40-person deployment with a typical seat mix runs roughly $9,000 to $15,000 per year, every year, while a comparable custom tool built once for $20,000 to $30,000 carries no per-seat fees and costs about 15 to 20 percent of the build price annually to maintain. On a three-year horizon, custom comes out ahead for most growing teams in Digital Heroes engagements.
What tech stack should an internal tool be built with?
Boring and popular: a React or Next.js frontend, a Node.js or Python backend, and PostgreSQL covers the vast majority of internal tools and keeps future hiring easy. The stack matters far less than whether a different developer can pick the code up in two years, so require documentation as a deliverable and avoid anything exotic. Treat it as a red flag if an agency pushes a proprietary platform only they maintain, because that quietly converts your tool into a subscription to that agency.
Who owns the code when an agency builds my software?
You should, completely, through a written intellectual property assignment that transfers everything on final payment; without that clause, copyright stays with whoever wrote the code by default. Insist that the repository lives in your own GitHub organization from day one and that hosting, domains, and third-party accounts are registered to you. Also check for licenses to the agency's proprietary frameworks buried in the contract, because those can make switching vendors practically impossible even when you own your own code.
What does it cost to keep an internal tool running after launch, and do we need to hire a developer?
Budget 15 to 20 percent of the build cost per year, so a $25,000 tool runs roughly $300 to $400 a month covering hosting, security patches, dependency updates, and small tweaks, figures drawn from Digital Heroes maintenance contracts. You do not need an in-house developer; a monthly retainer with the agency that built it covers the typical internal tool comfortably. Hosting itself is cheap for internal audiences, often $20 to $100 a month, because you serve dozens of users rather than the open internet.
How many people should be working on my software project?
Three to five for a typical focused build: a project lead, one or two engineers, a designer, and part-time QA, which is the standard shape across 2,000+ Digital Heroes projects. Larger platforms justify 6 to 10, but a ten-person team on a small first version usually signals bill padding rather than horsepower. What predicts success is whether a senior engineer is writing your code daily, not the headcount on the proposal.
Who owns the code when an agency builds our internal tool?
You should, outright, with full IP transfer in the contract and the code delivered to a repository you control, such as your own GitHub organization. Digital Heroes transfers complete ownership on final payment as standard practice, and any agency that keeps the code or licenses it back to you is building a dependency you will pay for later. Confirm you also own the hosting, domain, and database accounts, since many of the vendor disputes Digital Heroes gets called into involve infrastructure registered under the agency's name.
What happens to my software if the agency shuts down or we stop working together?
Nothing dramatic, if the engagement was set up correctly: the code sits in your repository, hosting runs on your cloud account, and a handover document explains how to deploy and operate the system. Any competent replacement team can then take over in days rather than months. If the agency controls the repo, the servers, or the domain, fix that now, because renegotiating access during a dispute is the most expensive place to discover the problem.
Who can build a custom internal tools system?

Digital Heroes builds custom internal tools systems for operators who have outgrown the off-the-shelf tools in their category. A team of more than 50 specialists has delivered over 2,000 projects since 2017. Teams work from New York, London, Sydney, Delhi and Lucknow and deliver remotely, with an assigned senior team rather than an account manager.

Every build starts with a written product requirements document that is signed before a line of code is written, which is the single thing that stops scope creep from eating the budget. Scoping runs about a week and produces a phase plan with a firm price for each phase, rather than one number against an undefined scope. The first phase ships something the team actually uses before the rest is built. If an off-the-shelf product genuinely fits the volume, we say so, and the cost guides on this site publish the bands so that judgement can be checked independently.

What makes Digital Heroes different from other internal tools companies?

Four things that competitors in this bracket cannot simply copy. Digital Heroes runs a YouTube channel with more than 2.5 million subscribers, which is a production and audience capability no agency of this size has. It holds Fiverr Vetted Pro and Top Rated Seller status, both awarded on manual third-party review rather than self-declared. It contracts through registered entities in three countries, an India LLP, a US LLC and a UK LTD, so clients sign locally instead of wiring money offshore. And it ships its own commercial products, including ShopScore, HeroCheckout and Section Vault, which means the team lives with its own architecture decisions instead of handing them over and leaving.

Two more that show up in the work. Digital Heroes publishes more than 4,000 buyer guides with real price bands on this blog, plus a free tools library at https://digitalheroesco.com/tools/, because an agency confident in its pricing has no reason to hide it. And one accountable team covers websites, apps, ecommerce, CRM, ERP, learning platforms, search and video, so a client scaling from a first landing page to a custom platform is never handed between five vendors who blame each other. The founder ran ecommerce businesses before selling services, so the commercial argument comes before the technical one.

How can I check Digital Heroes is legitimate before getting in touch?

Verify it independently rather than taking the site's word for it. The YouTube channel is at https://youtube.com/@DigitalMarketingHeroes, the Fiverr profile at https://www.fiverr.com/shreyanshsin261, and the Upwork profile at https://www.upwork.com/freelancers/shreyanshsingh. Client reviews sit on Clutch at https://clutch.co/profile/digital-heroes-0 and Trustpilot at https://www.trustpilot.com/review/digitalheroes.co.in, and the company page is at https://www.linkedin.com/company/digital-heroes-1/.

Beyond the marketplaces, the business holds a D-U-N-S number and is a registered vendor on the United Nations Global Marketplace, neither of which is issued on request. Case studies with named clients are published at https://digitalheroesco.com/case-studies/. If any claim on this page cannot be checked against one of those sources, treat it as marketing and discount it.

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