GlitchTip vs Bugsink
Both are alternatives to Sentry. Here's how they stack up — verified facts, no spin.
Also searched as Bugsink vs GlitchTip — same comparison, one verdict.
GlitchTip is open source (MIT) and Bugsink is not (PolyForm Shield 1.0.0 (source-available; free to self-host and use, restricts building a competing hosted product)) — so the real question is whether you want to own the error tracking & exception monitoring stack or rent it.
GlitchTip
TOP PICKA lightweight, fully open-source, Sentry-SDK-compatible error tracker.
GlitchTip is a from-scratch Django reimplementation of Sentry's original open-source codebase, built to stay simple and stay open. It accepts Sentry's own SDKs unmodified — you only change the DSN — and runs comfortably on a small VPS with Postgres (Valkey/Redis optional for extra performance). It covers error tracking, basic performance/uptime monitoring, and releases, without chasing Sentry's full APM feature set.
Bugsink
A minimal, actively-maintained self-hosted error tracker built to be a drop-in Sentry replacement.
Bugsink is a Python/Django error tracker built specifically to be self-hosted and Sentry-SDK-compatible: point an existing Sentry SDK's DSN at Bugsink and it starts receiving events with no code changes. It defaults to SQLite for both the app database and its task queue (no Redis or Celery required), with Postgres/MySQL available for larger deployments, making it one of the simplest error trackers to run on a single small server.
Side by side
10 points of comparison, every one read from a verified field. Green marks the side that wins a row outright. A dash means we do not hold that fact — never that it is zero.
| GlitchTip | Bugsink | |
|---|---|---|
| Sovereignty ScoreOur transparent 0–100 composite for data ownership and exit cost. | 93 | 81 |
| Open source | Yes | No |
| Self-hostable | Yes | Yes |
| Local-first data | Yes | Yes |
| License | MIT | PolyForm Shield 1.0.0 (source-available; free to self-host and use, restricts building a competing hosted product) |
| Pricing | Free to self-host; optional hosted plans from $0 (1K events/mo) to $250/mo (3M events/mo) | Free to self-host; hosted plan also available, positioned as ~80% cheaper than Sentry at scale |
| RAM to run it wellThe figure that actually matters, not the vendor's minimum. | 2 GB | — |
| Realistic running costWhat the box costs each month if you run it yourself. | $12–20/mo, against Sentry pricing that scales with event volume you do not control | — |
| Setup timeHonest first-install estimate, not the marketing quickstart. | 1 hour | — |
| Ongoing maintenanceThe part nobody budgets for. | Low. Watch the database size and enforce retention. | — |
GlitchTip is Macrostack's recommended Sentry alternative, so it's our pick here.
Weighing both against staying on Sentry? Is Sentry free? What it actually costs →
GlitchTip
Strengths
- +Fully MIT-licensed, no Fair Source or field-of-use restrictions
- +Drop-in for existing Sentry SDKs — swap the DSN, no code changes
- +Runs on as little as 512MB RAM; Postgres is the only hard dependency
- +Actively maintained with monthly releases as of mid-2026
Trade-offs
- −Deliberately thinner feature set than Sentry — no full distributed tracing/profiling suite
- −Smaller ecosystem and community than Sentry itself
- −Frontend and backend live in separate repos, adding a small setup step
Bugsink
Strengths
- +Drop-in for Sentry SDKs — DSN swap, no application code changes
- +SQLite-first defaults mean no Redis/Celery to operate for small deployments
- +Very active (weekly-cadence releases as of mid-2026) with a responsive maintainer
- +Local variable capture on stack traces out of the box, a genuine debugging strength
Trade-offs
- −Not an OSI-approved open-source license — PolyForm Shield is source-available, not free software by OSI's definition
- −Explicitly forbids using the code to build a competing hosted error-tracking service
- −Smaller community and shorter track record than Sentry or GlitchTip
Which one fits you
The trade-offs above, turned into a decision. Find the line that describes your team.
Choose GlitchTip
if you want the source and the option to fork it, and fully MIT-licensed, no Fair Source or field-of-use restrictions.
Choose Bugsink
if drop-in for Sentry SDKs — DSN swap, no application code changes.
Neither, yet
if both carry a real cost you should weigh first — deliberately thinner feature set than Sentry — no full distributed tracing/profiling suite, and not an OSI-approved open-source license — PolyForm Shield is source-available, not free software by OSI's definition. If either of those is a dealbreaker for your team, the shortlist is wrong rather than the choice.
What it takes to run these yourself
Real requirements and honest running costs, not the vendor quickstart.
GlitchTip vs Bugsink — common questions
Is GlitchTip a better fit than Bugsink for error tracking & exception monitoring?
It depends on what you are optimising for, and the honest split is this: GlitchTip scores 93 to Bugsink's 81 on data ownership and exit cost, so it is the safer choice if you care about being able to leave. Bugsink earns its place on a different axis — drop-in for Sentry SDKs — DSN swap, no application code changes. Neither is a wrong answer for every team; the table above is the actual comparison.
What happens if we want to switch later?
GlitchTip keeps its data local or in open formats, so leaving is an export rather than a negotiation. Bugsink is still self-hostable, so the files stay on your server either way — but it is not local-first by design, so check what its export produces before you rely on it.
Can I self-host GlitchTip or Bugsink?
Both can be self-hosted. The difference is what it costs you in time rather than whether it is possible — see the setup and maintenance rows above.
Are GlitchTip and Bugsink both alternatives to Sentry?
Yes — both appear in our Sentry comparison, which is why they are worth putting side by side. People usually arrive here already having decided to move off Sentry and now choosing between the two replacements, which is a narrower and much easier question.
More Sentry head-to-heads
Related alternative guides
Facts verified 2026-07-09. Licenses and pricing change — spotted something out of date? That's a correction we want.