Awesome Oss Alternatives

The fastest path to AI-powered full stack observability, even for lean teams.

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.

MinIO is a high-performance, S3 compatible object store, open sourced under GNU AGPLv3 license.

Open Source realtime backend in 1 file

Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, analytics, and vector search. No data silos. No noisy neighbors. No infrastructure ceiling.

:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distributed tracing, log management, infra monitoring, etc. Combined with SigNoz MCP and a native AI teammate (in SigNoz Cloud) it helps you build more resilient apps.

A docker-powered PaaS that helps you build and manage the lifecycle of applications

Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulnerabilities on the internet. It helps you find vulnerabilities in your applications, APIs, networks, DNS, and cloud configurations.

Connect your devices, users, and agents into a secure WireGuard®-based overlay network with SSO, MFA and granular access controls.

Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.

High-performance, scalable time-series database designed for Industrial IoT (IIoT) scenarios

Temporal service

☁️ Build multimodal AI applications with cloud-native stack

End-to-end realtime stack for connecting humans and AI

Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.

Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.

ZincSearch . A lightweight alternative to elasticsearch that requires minimal resources, written in Go.

VictoriaMetrics: fast, cost-effective monitoring solution and time series database

QuestDB is a high performance, open-source, time-series database

The Cloud-Native API Gateway and AI Gateway

Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database​.

ZITADEL - Identity infrastructure, simplified for you.

Open-source IDS/IPS, WAF and bot detection for Linux, Windows, Docker and Kubernetes, with a crowdsourced blocklist of malicious IPs.

:file_folder: Universal File Storage Client

Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.

The developer platform for on-demand cloud development environments to create software faster and more securely.

Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots

Session replay, cobrowsing and product analytics you can self-host. Best for reproducing issues and iterating on your product.

The infrastructure platform for the intelligence era

Open-source search database for full-text, vector, and hybrid search with real-time indexing and SQL.

Netmaker makes networks with WireGuard. Netmaker automates fast, secure, and distributed virtual networks.

YugabyteDB - the cloud native distributed SQL database for mission-critical applications.

Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics

The Open Source Firebase Alternative with GraphQL.

🫖 Status page with uptime monitoring & API monitoring as code 🫖

Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.

Fancy stream processing made operationally mundane

Production infrastructure for machine learning at scale

Data pipelines for cloud config and security data. Build cloud asset inventory, CSPM, FinOps, and vulnerability management solutions. Extract from AWS, Azure, GCP, and 70+ cloud and SaaS sources.

Easy web analytics. No tracking of personal data.

The task manager you actually own.

Open Source Cloud Native Application Protection Platform (CNAPP)

Jitsu is an open-source Segment alternative. Fully-scriptable data ingestion engine for modern data teams. Set-up a real-time data pipeline in minutes, not days

An MLOps framework to package, deploy, monitor and manage thousands of production machine learning models

Cerbos is an open-core authorization management platform for authorizing every identity and governing every action across applications, gateways, workloads, and AI agents.

Privacy and Security focused Segment-alternative, in Golang and React