Most "Sentry alternatives" lists rank tools by feature count. That is the wrong axis. The question that decides your weekend is narrower: does it speak Sentry's protocol?
Which Sentry alternatives work with the Sentry SDK?
If a tool implements Sentry's ingest endpoint, migration is a one-line change to the DSN and your instrumentation stays exactly as it is. If it does not, you are removing one SDK and adding another across every service you own, then re-testing the error paths you hope never run.
| Tool | Open-source Sentry SDKs work | Self-hostable |
|---|---|---|
| Parsemend | Yes (verified: PHP, Node) | No (hosted) |
| GlitchTip | Yes | Yes |
| Sentry (self-hosted) | Yes | Yes |
| Bugsnag, Rollbar, Honeybadger | No, each has its own SDK | Varies by vendor |
Everything below follows from that first column.
GlitchTip
The most honest option if what you want is Sentry-without-Sentry. GlitchTip is open source, implements the ingest protocol, and its site lists error tracking, performance monitoring, uptime monitoring and logs. Self-hosting it takes PostgreSQL and a single service. If your objection to Sentry is the price or the telemetry, GlitchTip answers it.
Self-hosted Sentry
The whole product, on your hardware, at no licence cost. The cost is operational: it is a large distributed system, and you will be the person who understands why Kafka is behind. Sentry's self-hosted docs list Seer, its AI agent, as unavailable there; the feature many people now want is the one self-hosting does not give you.
Bugsnag, Rollbar, Honeybadger
Mature, competent error trackers with their own SDKs and their own opinions. Each is a fine product. Each also means reinstrumenting your application, which is why teams rarely move between them without another reason.
Parsemend
Parsemend is an error tracker your coding agent can read. It stores errors, traces, logs and cron check-ins, runs uptime checks, and alerts by email, Slack, Discord or signed webhook. It implements the same envelope endpoint as Sentry, so the official Sentry SDKs work against it unchanged; we have verified this with the PHP and Node SDKs.
The reason to pick it is what happens after the alert. On the Developer plan (€9 a month, 50% off at launch; 5 projects, 50,000 events a month, 90-day retention), you install @parsemend/cli, run parsemend login, and register parsemend mcp with Claude Code, Codex or Cursor. Your agent pulls the issue's stack trace, events, trace and logs, fixes the code on your machine with its own model, and asks you before post_back sends the diff to the issue. Parsemend needs no GitHub access and asks for no AI keys. The Free plan (1 project, 5,000 events a month, 30-day retention) is the tracker and its alerts, read in the dashboard.
The honest limitation: Parsemend has no session replay and no profiling, and only the PHP and Node SDKs are verified. If you depend on replay or profiling, this list has better entries than us, and the full comparison says so in more detail.
How to choose
- You want to stop paying and keep the SDK, on your own servers → GlitchTip.
- You want everything Sentry does and will operate it → self-hosted Sentry.
- You want the coding agent you already use to read and fix production errors → Parsemend.
- You are already happy → stay where you are. Migrating error tracking to save $30 a month is not a good use of an engineer.
GlitchTip's feature list, Sentry's free-plan quota and Seer's absence from self-hosted Sentry were checked against glitchtip.com, sentry.io/pricing and Sentry's self-hosted docs in October 2026. If something is out of date, mail corrections@parsemend.com.