Best Error Monitoring Tools for Rust Applications Under $100/Month

Rust's promise of zero-cost abstractions and memory safety doesn't mean your application is immune to runtime errors. When a panic unwinds in production or an unexpected unwrap() rears its head, you need to know — fast. The problem? Most error monitoring platforms price themselves like enterprise software, with per-event billing that punishes scale.

We dug into the market for Rust-compatible error monitoring tools that stay under $100/month. The good news: the Rust ecosystem's embrace of Sentry's open-source SDK means you're not locked into Sentry itself. Several excellent alternatives accept the same sentry crate events, giving you flexibility without rewriting your instrumentation. Here are the things actually worth buying.

How We Tested

Every tool on this list had to meet three criteria: a plan at or under $100/month, official or compatible support for Rust's Sentry SDK (sentry = "0.48.2")1, and a track record of reliable error ingestion. We prioritized tools that offer either self-hosted cost control or generous event quotas at the sub-$100 tier.

1. Highlight.io — Best Modern Visual Debugging

Starting at $50/month

Highlight.io is the newcomer that feels like it was built for today's stack. Its session replay and visual debugging capabilities go beyond stack traces — you can watch exactly what a user was doing when an error hit. For Rust teams shipping complex CLI tools or web services, this context is invaluable.

The $50/month plan includes 5,000 sessions and 50,000 errors, which covers most small-to-mid Rust projects comfortably. Highlight.io is open-source, so you can also self-host if your usage outgrows the paid tier. Its Rust support works through the standard Sentry SDK — point your existing sentry crate at Highlight.io's endpoint and you're live in minutes.

Who it's for: Teams that want session replay and visual debugging without jumping to enterprise pricing.

2. Bugsink — Best Budget Self-Hosted Option

Free (self-hosted) / Paid plans available

Bugsink takes a refreshingly simple approach: it's a self-hosted error tracking service that is fully compatible with Sentry's open-source SDKs.2 That means your Rust application's existing Sentry instrumentation works with Bugsink by just changing the DSN. No code changes, no new crates, no migration headaches.

For teams on a shoestring budget, Bugsink is the clear winner. Self-hosting on a $5/month VPS gives you unlimited error ingestion — no per-event fees, no surprise overage charges. The trade-off is you handle your own infrastructure, but for a Rust backend that's already deployed on your own servers, that's rarely a dealbreaker.

Who it's for: Budget-conscious teams who already self-host their infrastructure and want unlimited error ingestion at near-zero cost.

3. Bugsnag — Most Stable Industry Standard

Starts at $99/month (Small Team plan)

Bugsnag has been in the error monitoring game long enough to earn its reputation for rock-solid stability. Its Small Team plan comes in just under our $100 threshold at $99/month, making it the priciest pick here — but also the most battle-tested.

Bugsnag's Rust support works via the Sentry SDK compatibility layer, and its dashboard prioritizes what matters: error grouping, user impact scoring, and stable release tracking. The stability scoring feature is genuinely useful for Rust teams shipping frequent releases, as it surfaces regressions tied to specific deploys.

Who it's for: Teams that prioritize reliability above all else and can stretch to $99/month for a proven platform.

4. Atatus — Best All-in-One Observability

Starting at $49/month

Atatus is the Swiss Army knife of this list. For $49/month, you get error tracking plus real-user monitoring, APM, and infrastructure monitoring — all in one dashboard. For Rust teams that also manage the surrounding infrastructure, this consolidation saves both money and context-switching.

Atatus supports Rust through its Sentry-compatible ingestion, and its APM traces give you end-to-end visibility from HTTP request to database query. The $49/month plan includes 50,000 errors and basic APM features, making it the best value for teams that need more than just error tracking.

Who it's for: Teams that want observability beyond errors — APM, RUM, and infrastructure — all under one $49/month roof.

Comparison at a Glance

Which One Should You Pick?

If you want the most context per error: Go with Highlight.io. Session replay at $50/month is a steal for the debugging power it gives your Rust team.

If you're on a tight budget: Bugsink is unbeatable. Self-host it on a cheap VPS and you get unlimited error ingestion with zero per-event fees. Your existing Sentry SDK code works immediately.

If you need battle-tested stability: Bugsnag at $99/month is the safe choice. It's been around forever, and its stability scoring helps Rust teams catch regressions fast.

If you want everything in one tool: Atatus at $49/month gives you error tracking, APM, and real-user monitoring. It's the best value for teams that need full observability.

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