Closest to Axiom
SigNoz is an OpenTelemetry-native platform for metrics, traces, and logs. Grafana Loki indexes labels instead of full text to lower storage costs, and HyperDX unifies session replay, logs, traces, and metrics on ClickHouse.
Alternatives / Axiom
8 open-source alternatives
8 Best Open Source Axiom Alternatives in 2026
Looking for an open source Axiom alternative? We compared 8 open source observability platforms by license, OpenTelemetry support, and maintenance. SigNoz is the broadest, Loki is built for logs, and HyperDX, Coroot, and Uptrace add other angles.
Written by Maxime DERAME
Last updated:
Best Axiom alternatives at a glance
| Alternative | Best for | License |
|---|---|---|
| SigNoz | Metrics, traces, and logs on OpenTelemetry | MIT core + EE |
| Grafana Loki | Label-indexed log storage | AGPL-3.0 |
| HyperDX | Logs, traces, and session replay on ClickHouse | MIT |
| OpenLLMetry | OpenTelemetry for LLM apps | Apache-2.0 |
| Coroot | eBPF telemetry with no code changes | Apache-2.0 (Community Edition) |
| Pydantic Logfire | Python observability (SDK only is open) | MIT (SDK only) |
| Uptrace | OpenTelemetry platform | AGPL-3.0 |
| Maple | ClickHouse platform with MCP server (FSL) | FSL-1.1 |
How we chose these Axiom alternatives
We looked for open-source tools that store and query logs, traces, and metrics like Axiom. We verified each project's license, recent activity, stars, and self-hosting in its repository. See our methodology for the full criteria.
Other platforms
Coroot uses eBPF to collect telemetry with no code changes, and Uptrace is an OpenTelemetry platform with free self-hosting. OpenLLMetry covers LLM application tracing, and Logfire is a Python-focused tool from the Pydantic team whose SDK is open source.
Important: licenses
Maple uses the Functional Source License (FSL-1.1), which is source available until it converts to Apache-2.0 after two years. SigNoz has enterprise directories. Logfire's platform is not open source, only its SDK.
License details
HyperDX, SigNoz core, and Logfire SDK are MIT. OpenLLMetry and Coroot are Apache-2.0. Loki and Uptrace are AGPL-3.0.
Maintenance status
All eight had commits within days or weeks of this update.
Why look for a Axiom alternative?
Axiom is a proprietary platform priced by ingest, with your telemetry stored in its cloud. Open-source stacks can be self-hosted at predictable cost, but you run storage and scaling yourself.
signoz.io
SigNoz is an all-in-one observability platform for microservices that combines metrics, distributed tracing, and logs with dashboards and alerts, built on OpenTelemetry. The repository is MIT outside its ee directories, which are under a separate license.
32.4K2.5KMIT core + EESelf-hosted
Pricing: Free self-hosted community edition; paid cloud and enterprise plans.
- Metrics, traces, and logs in one OpenTelemetry-based tool
- Active development
- Lower cost than proprietary APM
- Open core with enterprise features under a separate license
- Needs resources to operate at scale
grafana.com
Grafana Loki is a log aggregation system that indexes labels instead of full text, uses object storage, and offers LogQL queries, alerting, and multi-tenancy for cloud-native and Kubernetes environments.
29K4.1KAGPL-3.0Self-hosted
Pricing: Free self-hosted; managed and enterprise tiers available.
- Low-cost log storage on object storage
- Tight integration with Grafana
- LogQL and multi-tenancy
- No full-text indexing, so some searches are slower
- AGPL-3.0 license
hyperdx.io
HyperDX is an MIT-licensed observability platform that combines logs, traces, metrics, errors, and session replays in one interface, built on ClickHouse and OpenTelemetry, with a hosted option billed by data volume.
10K499MITSelf-hosted
Pricing: Free to self-host; the hosted service is usage-based.
- Logs, traces, metrics, and replay in one tool
- OpenTelemetry-based
- MIT license
- Heavier to run than an uptime monitor
- Not focused on simple uptime checks
coroot.com
Coroot is an Apache-2.0 observability platform that uses eBPF to collect metrics, logs, traces, and profiles with no code changes, with service maps and AI-assisted root cause analysis. A free Community Edition is available and enterprise features are paid.
8K408Apache-2.0 (Community Edition)Self-hosted
Pricing: Free Community Edition; enterprise features are paid.
- Zero instrumentation
- Service maps
- Kubernetes rollout tracking
- Some features are enterprise-only
- Linux and eBPF dependent
traceloop.com
OpenLLMetry is an Apache-2.0 set of OpenTelemetry-based instrumentation libraries for LLM applications, built and maintained by Traceloop. It adds tracing for LLM providers, vector databases, and frameworks with a couple of lines of code and sends data to any OpenTelemetry-compatible backend, so it is not a dashboard by itself.
7.5K1.2KApache-2.0Self-hosted
Pricing: Free and open source; Traceloop offers a paid platform.
- Built on OpenTelemetry standards
- Works with any compatible backend
- Apache-2.0 license
- A library, not a full observability UI
- You must choose and run a backend
pydantic.dev
Pydantic Logfire is an observability platform for logs, traces, and profiling with strong Python integration and OpenTelemetry support. The repository contains the open-source SDK and documentation, while the server application is closed source and offered as a hosted service.
4.5K328MIT (SDK only)
Pricing: SDK is free; the hosted platform has its own pricing.
- Excellent Python and OpenTelemetry integration
- Structured, readable traces
- MIT-licensed SDK
- The server is closed source and not self-hostable
- Not a full open-source alternative
uptrace.dev
Uptrace is an open-source APM that integrates traces, metrics, and logs through OpenTelemetry, with a service graph, RED metrics, and support for many languages. It can be self-hosted or used as a managed cloud.
4.3K223AGPL-3.0Self-hosted
Pricing: Free self-hosted; cloud has a free tier and pay-per-usage plans.
- All-in-one OpenTelemetry APM
- Service graph and RED metrics
- Vendor-agnostic
- AGPL-3.0 license
- Smaller community than SigNoz or Grafana
maple.dev
Maple is an observability platform built on OpenTelemetry and ClickHouse for traces, logs, and metrics, with session replay, service maps, error tracking, alerting, and an MCP server for AI agent diagnostics. It is licensed under FSL-1.1, which converts to Apache-2.0 two years after each release.
1.9K120FSL-1.1Self-hosted
Pricing: Free local mode in a single binary; hosted plan from $39 per month.
- Single binary for local use with embedded ClickHouse
- MCP server for AI agents
- Traces, logs, metrics, and session replay
- Source available, not OSI-approved open source
- Young project
Compare Axiom alternatives
| Alternative | Type | License | Self-hosted | Best for |
|---|---|---|---|---|
| SigNoz | Observability | MIT core + EE | Yes | Closest replacement |
| Grafana Loki | Log storage | AGPL-3.0 | Yes | Cheap logs |
| HyperDX | Observability | MIT | Yes | Unified debugging |
| OpenLLMetry | LLM observability | Apache-2.0 | Library | LLM tracing |
| Coroot | Observability | Apache-2.0 (Community) | Yes | Kubernetes teams |
| Pydantic Logfire | Observability SDK | MIT (SDK only) | No (hosted) | Python apps |
| Uptrace | Observability | AGPL-3.0 | Yes | Traces and metrics |
| Maple | Observability | FSL-1.1 (source available) | Yes | Incident workflows |
Which one should you choose?
Want a single observability platform
SigNoz covers metrics, traces, and logs on OpenTelemetry.
Want cheap log storage
Loki indexes labels instead of full text.
Want zero-instrumentation telemetry
Coroot collects data with eBPF and no code changes.