Lago vs WhichProp: Which Is Better in 2026?
A side-by-side comparison of Lago and WhichProp, two finance tools — what each does, who it's best for, and how to choose between them.
Quick verdict
Lago and WhichProp are both finance tools, so it comes down to fit. Pick Lago if you want An open-source metering and usage-based billing platform for SaaS — a self-hostable alternative to closed billing… Pick WhichProp if you want Prop firm directory rated by bot & automation policy, with rule-change log and shutdown tracker.
Lago
An open-source metering and usage-based billing platform for SaaS — a self-hostable alternative to closed billing tools.
- Category
- Finance
- Rating
- Not yet rated
- Best for
- billing, usage-based billing, open source
WhichProp
Prop firm directory rated by bot & automation policy, with rule-change log and shutdown tracker.
- Category
- Finance
- Rating
- Not yet rated
| At a glance | Lago | WhichProp |
|---|---|---|
| What it is | An open-source metering and usage-based billing platform for SaaS — a self-hostable alternative to closed billing tools. | Prop firm directory rated by bot & automation policy, with rule-change log and shutdown tracker. |
| Category | Finance | Finance |
| Type | Software | Software |
| Best for | billing, usage-based billing, open source, metering | — |
What is Lago?
Lago is an open-source metering and usage-based billing platform built for modern software companies, especially those with complex or consumption-based pricing. As more SaaS and AI products move away from simple flat subscriptions toward usage-based, hybrid and tiered models, billing becomes genuinely hard to build and maintain. Lago tackles this head-on, providing a flexible billing engine that handles metering events, applying pricing logic, and generating invoices — all available as open source you can self-host or use in the cloud.
The platform's core is its event-based metering and pricing system. Lago ingests usage events from your product, aggregates them, and applies whatever pricing structure you need — per-seat, per-usage, tiered, volume, packages, prepaid credits, add-ons and combinations thereof. This flexibility is exactly what teams struggle to build in-house, where billing code becomes a sprawling, error-prone mess. Lago centralizes that logic in a dedicated, battle-tested system, then handles invoicing, coupons, taxes and integrations with payment providers and your finance stack.
Being open source is a major differentiator. Companies that care about data control, customization or avoiding the high fees and lock-in of closed billing platforms can self-host Lago and shape it to their needs, while still benefiting from an active community and ongoing development. It's particularly popular with developer-led and API-first companies, including many in the AI space, where usage-based pricing is the norm and accurate metering is critical to revenue. For engineering and finance teams who find building billing in-house painful and proprietary platforms expensive or inflexible, Lago offers a powerful, transparent and adaptable foundation. It represents a modern, open approach to one of software's least glamorous but most important problems: getting paid accurately for what customers actually use.
What is WhichProp?
WhichProp is a free directory of prop trading firms, rated by what matters most to automated traders: whether a firm allows bots, EAs, copy trading and other automation. It covers futures, forex and options firms, with each firm's automation policy, pricing, drawdown rules and payout terms listed alongside a source link and the date it was last checked. Anything we can't confirm is clearly marked Unverified. WhichProp also keeps a rule-change log so traders can see when a firm quietly tightens its policies, and a shutdown tracker for firms that have closed or stopped paying out. It's built for algo traders, EA users and anyone who wants to pick a prop firm without getting an account breached over a rule they never saw.
Key differences at a glance
- Purpose: Lago is An open-source metering and usage-based billing platform for SaaS — a self-hostable alternative to closed billing tools. WhichProp, by contrast, is Prop firm directory rated by bot & automation policy, with rule-change log and shutdown tracker.
- Category & type: both sit in Finance, and both are offered as software.
- Best suited for: Lago leans toward billing, usage-based billing, open source, whereas WhichProp leans toward a broad audience.
- Community rating: Lago is not yet rated vs WhichProp is not yet rated. Ratings are community-submitted and change over time.
Lago vs WhichProp: which should you choose?
Lago and WhichProp both serve the finance space, so the best choice depends on your priorities. Choose Lago if you want An open-source metering and usage-based billing platform for SaaS — a self-hostable alternative to closed billing tools. Choose WhichProp if you want Prop firm directory rated by bot & automation policy, with rule-change log and shutdown tracker.The smartest move is to try each one's free tier or trial on a real task — that's the fastest way to feel the difference and pick the tool you'll actually stick with.
Frequently asked questions
Is Lago better than WhichProp?
It depends on what you need. Lago is An open-source metering and usage-based billing platform for SaaS — a self-hostable alternative to closed billing tools. WhichProp is Prop firm directory rated by bot & automation policy, with rule-change log and shutdown tracker. Both are finance tools, so the right pick comes down to your specific priorities, budget and workflow.
What's the main difference between Lago and WhichProp?
Lago focuses on An open-source metering and usage-based billing platform for SaaS — a self-hostable alternative to closed billing tools. while WhichProp focuses on Prop firm directory rated by bot & automation policy, with rule-change log and shutdown tracker. Read the full breakdown above and check each tool's site for current features and pricing.
Can I use both Lago and WhichProp?
In many cases, yes — teams often use complementary tools together. Whether it makes sense depends on overlap in functionality and your budget. Try the free tier or trial of each to see how they fit your stack before committing.
Which is cheaper, Lago or WhichProp?
Pricing changes often, so check each tool's pricing page for the latest. Many tools offer a free tier or trial, which is the best way to evaluate value for your specific usage before you pay.