Awesome Oss Alternatives

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

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

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.

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

🦔 PostHog is an all-in-one developer platform for building successful products. We offer product analytics, web analytics, session replay, error tracking, feature flags, experimentation, surveys, data warehouse, a CDP, and an AI product assistant to help debug your code, ship features faster, and keep all your usage and customer data in one stack.

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.

SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool

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

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

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

☁️ Build multimodal AI applications with cloud-native stack

Temporal service

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

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

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

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

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

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.

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​.

:file_folder: File Management Platform / Universal Data Access Layer (without FUSE)

ZITADEL - Identity infrastructure, simplified for you.

CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.

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

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.

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

Easy to use open source fast database for search | Good alternative to Elasticsearch | Drop-in replacement for E in the ELK stack

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.

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

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

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.

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

The to-do app to organize your life.

Cerbos is the open core, language-agnostic, scalable authorization solution that makes user permissions and authorization simple to implement and manage by writing context-aware access control policies for your application resources.

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