GlitchTip vs Highlight.io: Error Tracking 2026
GlitchTip vs Highlight.io: Open Source Error Tracking Compared
Two open source error tracking tools with different scopes. GlitchTip is a lightweight, Sentry-compatible error tracker that uses a fraction of the resources. Highlight.io goes beyond errors — adding session replay, logging, and traces in one platform.
Quick Verdict
Choose GlitchTip for simple, resource-efficient error tracking — Sentry SDK compatibility, 1-2 GB RAM, handles most error tracking needs. Choose Highlight.io for full-stack monitoring — errors + session replay + logs + traces in one platform.
The Comparison
| Feature | GlitchTip | Highlight.io |
|---|---|---|
| Primary focus | Error tracking | Errors + replay + logs + traces |
| Stack | Python (Django), PostgreSQL | Go, React, ClickHouse |
| Error tracking | ✅ | ✅ |
| Session replay | ❌ | ✅ (core feature) |
| Logging | ❌ | ✅ |
| Traces | ❌ | ✅ |
| Sentry SDK compatible | ✅ | Own SDKs |
| Issue grouping | ✅ | ✅ |
| Stack traces | ✅ | ✅ |
| Source maps | ✅ | ✅ |
| Alerts | ✅ (email, webhooks) | ✅ (Slack, email, etc.) |
| Performance monitoring | ✅ (basic) | ✅ |
| User context | ✅ | ✅ |
| Release tracking | ✅ | ✅ |
| Team management | ✅ | ✅ |
| API | ✅ (Sentry-compatible) | ✅ |
| RAM usage | 1-2 GB | 4-8 GB |
| Self-hosted | ✅ (Docker) | ✅ (Docker) |
| Cloud option | GlitchTip Cloud | Highlight Cloud |
| Stars | 900+ | 8K+ |
| License | MIT | Apache 2.0 |
When to Choose GlitchTip
- Error tracking is the primary need (no session replay, logs, or traces)
- Sentry SDK compatibility (drop-in replacement)
- Lightweight deployment (1-2 GB RAM vs Sentry's 8+ GB)
- Simple setup and maintenance
- Already using Sentry SDKs and want to self-host cheaply
- Budget-friendly VPS ($5-10/month is sufficient)
- MIT license preference
When to Choose Highlight.io
- Full-stack monitoring in one tool (errors + replay + logs + traces)
- Session replay to see exactly what users experienced when errors occurred
- Log aggregation alongside error tracking
- Distributed tracing for debugging microservices
- More polished, modern UI
- Larger community (8K+ stars)
- You want one tool instead of several
The Sentry Compatibility Advantage
GlitchTip's killer feature is Sentry SDK compatibility. If you're using Sentry SDKs already:
# Just change the DSN — same SDK, same code
import sentry_sdk
sentry_sdk.init(
dsn="https://key@your-glitchtip.com/1", # Point to GlitchTip
traces_sample_rate=0.1,
)
No code changes. No new SDKs. Just change the DSN endpoint. This makes migration from Sentry (or switching between Sentry and GlitchTip) trivial.
Highlight.io uses its own SDKs, which offer more features (replay, logging) but require changing your instrumentation code.
Deploying and Configuring Your Chosen Tool
Choosing a tool is the easy part — deploying it in a way that holds up under real traffic takes a little more planning. Both GlitchTip and Highlight.io ship Docker Compose configurations, but there are meaningful differences in what each requires at the infrastructure level.
GlitchTip Setup
GlitchTip's architecture is intentionally minimal: Django application, PostgreSQL database, Redis for queuing, and a Celery worker. That's it. The footprint is small enough to run on a $10/month VPS without resource contention.
Start by pulling the official Docker Compose file from the GlitchTip documentation. Before you start the stack, the critical environment variables to set are SECRET_KEY (generate with openssl rand -hex 32), DATABASE_URL pointing to your PostgreSQL instance, and REDIS_URL. Set GLITCHTIP_DOMAIN to the public URL where users and SDKs will reach GlitchTip.
Once the containers start, run the initial database migration and create your first superuser account using the management commands documented in the GlitchTip repo. After that, creating a project generates a DSN — that's the endpoint string you paste into your application's Sentry SDK configuration. Because GlitchTip speaks the Sentry ingest protocol, the SDK doesn't know the difference.
For production deployments, put GlitchTip behind Caddy or Nginx for HTTPS termination. Configure Celery to handle email notifications by setting SMTP credentials. Enable uptime monitoring — GlitchTip's built-in monitor pings external URLs on a schedule and fires alerts when they stop responding, which is a useful free feature for anyone running self-hosted services. If you already track open source observability with tools like Grafana and Prometheus, GlitchTip fits cleanly into an existing alerting pipeline. See the Grafana + Prometheus self-hosted observability stack guide for how to wire uptime and error data into a unified dashboard.
Highlight.io Setup
Highlight.io's architecture is more ambitious, which explains the higher RAM requirement. The stack includes a Go backend, ClickHouse for analytics and session replay storage, and Redis. ClickHouse alone requires at least 4 GB RAM to run without constant swapping, so a $20-40/month VPS is a realistic minimum for production use.
The official Highlight.io self-hosting documentation walks through a Docker Compose deployment. After configuring environment variables for the backend URL, frontend URL, and object storage (S3 or MinIO), initialize the database schema using the provided migration command. Highlight.io ships with a built-in setup wizard that walks through project creation and SDK integration.
For your frontend, install the Highlight.io JavaScript SDK and call H.init() with your project ID. The SDK automatically captures errors, console logs, and user sessions. Server-side SDKs for Node, Python, Go, and Ruby capture backend errors and tie them to the same session context. This is the core value proposition: when a user reports an error, you can replay exactly what they did in the seconds before the crash.
When evaluating your broader monitoring setup, consider whether Highlight.io replaces multiple tools. If you were planning to run separate error tracking, log aggregation, and uptime monitoring, Highlight.io consolidates three of those into one deployment. For teams considering alternatives to proprietary error tracking, the best open source alternatives to Sentry comparison walks through how GlitchTip and Highlight.io both stack up against the broader field.
Security, Operational Hardening, and Ongoing Maintenance
Error tracking tools receive exception data from your application, which can include sensitive information: user IDs, request headers, form data, and environment variables. Both GlitchTip and Highlight.io need to be configured carefully to avoid ingesting data you don't intend to store.
Data scrubbing: GlitchTip respects the Sentry SDK's before_send hook, which lets you filter or modify events before they leave your application. Use this to strip PII from error payloads — passwords, credit card numbers, and authentication tokens frequently appear in stack traces if you're not careful. Configure the SDK to scrub specific fields by key name.
Network access: Neither tool should be publicly accessible without authentication. GlitchTip's admin interface and Highlight.io's dashboard should sit behind your identity provider. If you're running Authentik or Keycloak for SSO across your self-hosted stack, both tools support OIDC-based login. The Authentik vs Keycloak comparison covers which identity provider integrates more smoothly with typical open source tool stacks.
Backup strategy: GlitchTip stores all data in PostgreSQL. A daily pg_dump shipped to object storage is a reasonable baseline backup. Highlight.io's ClickHouse tables require their own backup tooling — ClickHouse has a built-in backup command, but make sure you're backing up both ClickHouse and the relational database used for configuration.
Data retention: Error tracking data accumulates quickly. Both tools support configurable retention windows. For GlitchTip, set a retention period that balances debuggability against storage cost — 90 days is a common choice for production issues. Highlight.io's session replay data is storage-intensive; 30 days is more practical for teams with limited object storage budgets.
Updates: Subscribe to security advisories for both projects on GitHub. GlitchTip releases are infrequent and well-documented. Highlight.io is more actively developed and releases more often. Pin your Docker image tags to specific versions rather than using latest so updates are deliberate rather than accidental.
Migrating from Sentry: What Actually Transfers
If you're coming from Sentry and want to move to either GlitchTip or Highlight.io, understanding what transfers automatically versus what needs to be rebuilt prevents surprises during cutover.
GlitchTip migration from Sentry: The SDKs are identical, so migrating means changing one line per service — the DSN URL in your SDK initialization. All your existing instrumentation, custom tags, user context, and breadcrumb configuration continues working without modification. What doesn't transfer: existing Sentry issues and their history, team configurations, and alert rules. GlitchTip starts fresh — you're keeping the instrumentation code, not the historical data.
Alert rules need to be recreated in GlitchTip's interface. GlitchTip supports email and webhook notifications; Slack notifications require configuring a webhook endpoint. The alert rule logic is similar to Sentry's but has fewer conditions. If you had complex Sentry alert rules with environment filters and release conditions, expect to spend an hour or two rebuilding them.
Highlight.io migration from Sentry: This requires more work because Highlight.io uses different SDKs. For each service, remove the Sentry SDK, install the Highlight.io SDK, and update the initialization code. The concepts are similar but the API surface is different. The advantage: you gain session replay and log capture that Sentry's free and lower tiers don't provide.
Highlight.io's SDKs are well-documented and the migration for a typical Next.js or Node application takes a few hours. The complexity scales with how many services you're instrumenting. For teams running more than five services, plan for a staged rollout rather than a simultaneous cutover. For a broader look at the open source error tracking landscape before committing, see the GlitchTip vs Sentry community edition comparison which covers how these tools compare on features, community support, and long-term viability.
The Bottom Line
GlitchTip is the "just errors" solution — lightweight, Sentry-compatible, runs on minimal resources. If error tracking is all you need and you want to self-host cheaply, GlitchTip is the best option.
Highlight.io is the "everything in one" solution — errors, session replay, logs, and traces. If you want visibility into what users see and experience (not just errors), Highlight.io delivers more insight at the cost of more resources.
Choosing Between GlitchTip and Highlight.io as a First-Time Self-Hoster
For teams just starting to add observability to their self-hosted stack, the choice between these two tools often comes down to a simple question: what does failure look like without this tool in place?
If the answer is "I find out about bugs from users who email me," then error tracking is the gap. GlitchTip fills that gap with minimal infrastructure and a migration path that's as simple as changing one line of configuration if you're already using Sentry SDKs. For indie hackers, small teams, and projects where simplicity and resource efficiency matter most, GlitchTip is the right first observability tool.
If the answer is "I know errors are happening but I can't reproduce them or understand the user context," then session replay and logging are the gap. Highlight.io addresses this directly — when a user experiences an error, you can watch what they did in the seconds before it happened. For products where conversion or retention depends on a smooth user experience, and where errors are multi-step interactions rather than simple crashes, Highlight.io's fuller picture of user sessions is worth the higher resource cost.
Both tools represent a significant step up from running with no error tracking at all. Either choice pays for itself the first time you fix a bug you otherwise would never have found. For the broader open source monitoring and observability ecosystem, the Grafana vs Uptime Kuma comparison covers complementary monitoring tools that work well alongside both GlitchTip and Highlight.io in a self-hosted stack.
Compare error tracking tools on OSSAlt — features, SDK support, and community health side by side.
See open source alternatives to Glitchtip on OSSAlt.