Top HACKTOBER GitHub Repositories & Tools (2026)

A curated list of awesome Go frameworks, libraries and software

Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation

:books: Freely available programming books

Open-source, self-hosted MCP gateway: turn any REST/OpenAPI, SOAP, GraphQL, OData or SQL API into MCP tools for Claude, ChatGPT & Copilot. 265 connectors incl. SAP S/4HANA & Business One, ERP, e-commerce.

Hunt down social media accounts by username across social networks

Virtual whiteboard for sketching hand-drawn like diagrams

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

A list of useful payloads and bypass for Web Application Security and Pentest/CTF

All Algorithms implemented in Python

A smarter cd command. Supports all major shells.

The Free Software Media System - Server Backend & API

A powerful little TUI framework 🏗

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.

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.

Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD

The best IP Toolbox. Check your IP address & geolocation, test IP for WebRTC and DNS IP leaks, run an IP quality check, browser fingerprint check, website availability check, network speed test, global latency test, MTR test, Whois search, and more.

A simple, fast and user-friendly alternative to 'find'

:house_with_garden: Open source home automation that puts local control and privacy first.

Render markdown on the CLI, with pizzazz! 💅🏻

A one-of-a-kind resume builder that keeps your privacy in mind. Completely secure, customizable, portable, open-source and free forever. Try it out today!