Open-source observability platform that unifies traces, metrics and logs in one OpenTelemetry-native tool, self-hosted or cloud.
signoz.io
#open-source
18 tools curated in this category — including SigNoz, Hopsworks, Highlight.io
techFind on mySelectas all sites and tools related to open-source. This selection of 18 resources is reviewed and maintained by the community. The most popular include SigNoz, Hopsworks, Highlight.io. Each tool comes with a review, tags, comparisons and alternatives to help you make the best choice.
Managed feature store and AI lakehouse platform for building production machine-learning systems with millisecond-latency feature serving.
hopsworks.ai
Open-source fullstack monitoring: session replay, error tracking, logging and tracing in one self-hostable platform.
highlight.io
Open-source feature store that manages the machine-learning data teams use for both model training and real-time predictions.
feast.dev
Generates polished API documentation and client SDKs in multiple languages directly from an OpenAPI spec.
buildwithfern.com
Open-source product + web analytics: funnels, cohorts, session replay and revenue tracking, self-hostable for free.
openpanel.dev
Community-governed, truly open-source secrets manager — a Linux Foundation fork of Vault, born when Vault went source-available.
openbao.org
Minimal, free web analytics that tracks visits without tracking people — no cookies, no personal data, no consent banner needed.
goatcounter.com
Open-source Python library that moves data from any source into your warehouse, handling schema and normalization for you.
dlthub.com
Open-source LLM eval and red teaming: test prompts, compare models, catch jailbreaks and data leaks locally and in CI.
promptfoo.dev
Self-hostable Airtable alternative: spreadsheet UI over your Postgres or MySQL, REST APIs, forms, kanban and RBAC.
nocodb.com
TypeScript framework for AI agents and workflows: typed tools, graph orchestration, memory, RAG and 90+ model providers.
mastra.ai
Reactive Python notebook stored as pure .py files: no hidden state, Git-friendly, SQL built in, deploys as apps or WASM.
marimo.io
Open-source AI gateway and LLM observability: one API for 100+ models, cost and latency tracking, prompt management.
helicone.ai
Open-source observability database unifying metrics, logs and traces: SQL and PromQL, written in Rust, object-storage native.
greptime.com
Fast team knowledge base: real-time markdown editor, AI search and Q&A, Slack integration — cloud or self-hosted (BSL).
getoutline.com
Python framework for role-based multi-agent teams: Crews plus event-driven Flows, from MIT open source to enterprise suite.
crewai.com
AI-native Postgres observability: 45+ automated health checks, query and config tuning, agent-ready JSON and MCP output. Open source.
postgres.ai