Exceptionless
A mature error tracker with a strong .NET accent and a real server to maintain.
Technical Profile & Specs
verified 2026-08-11
- Cost
- $0 / forever (Open Source)
- License
- Apache-2.0
- Hosting Model
- Local or hosted (your machine or their cloud)
- Platforms
- webself-hostedself-host, real ops
- Installation
- Hosted signup, or Docker Compose/all-in-one image; Kubernetes is recommended for production
- Operational Setup
- The first production obstacle is operating Elasticsearch and Redis with durable storage, backups, migrations, SMTP and TLS rather than merely starting the demo container
- Where Your Data Lives
- Hosted events live in Exceptionless's service; self-hosted events and indexes live in Elasticsearch, with Redis used for queues/cache and configurable storage providers for files
- The Catch / Trade-off
- It is strongest for .NET and general event logging, with a smaller SDK/integration ecosystem and less sophisticated frontend tracing, replay and profiling than Sentry.
Replaces 1 paid app
Exceptionless FAQ
Common questions
Is Exceptionless free and open source?+
Exceptionless is an open-source tool licensed under Apache-2.0 that runs on local or hosted. A mature error tracker with a strong .NET accent and a real server to maintain.
What paid software does Exceptionless replace?+
Exceptionless serves as a free replacement for 1 paid SaaS application: Sentry.
How do you install and set up Exceptionless?+
Installation: Hosted signup, or Docker Compose/all-in-one image; Kubernetes is recommended for production. Setup notes: The first production obstacle is operating Elasticsearch and Redis with durable storage, backups, migrations, SMTP and TLS rather than merely starting the demo container
What is the catch or trade-off with Exceptionless?+
It is strongest for .NET and general event logging, with a smaller SDK/integration ecosystem and less sophisticated frontend tracing, replay and profiling than Sentry.