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The 30 Days of Python programming challenge is a step-by-step guide to learn the Python programming language in 30 days. This challenge may take more than 100 days. Follow your own pace. These videos may help too: https://www.youtube.com/channel/UC7PNRuno1rzYPb1xLa4yktw

Free universal database tool and SQL client

A privacy-first, open-source platform for knowledge management and collaboration. Download link: http://github.com/logseq/logseq/releases. roadmap: https://logseq.io/p/NX4mc_ggEV

The easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with data :bar_chart:

A SQL database in Rust: SQLite-compatible, now also speaking Postgres (experimental). The LLVM of databases.

ORM

Scrapy, a fast high-level web crawling & scraping framework for Python.

Apache Superset is a Data Visualization and Data Exploration Platform

: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.

Umami is a privacy-first analytics platform. Traffic, campaigns, behavior, conversions, and revenue in one place — no cookies, no surveillance, self-hosted or in the cloud.

Crawlee—A web scraping and browser automation library for Node.js to build reliable crawlers. In JavaScript and TypeScript. Extract data for AI, LLMs, RAG, or GPTs. Download HTML, PDF, JPG, PNG, and other files from websites. Works with Puppeteer, Playwright, Cheerio, JSDOM, and raw HTTP. Both headful and headless mode. With proxy rotation.

A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.

Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

Apache Spark - A unified analytics engine for large-scale data processing

:memo: An awesome Data Science repository to learn and apply for real world problems.

Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events.

Development at the speed of light

Official home of the DB Browser for SQLite (DB4S) project. Previously known as "SQLite Database Browser" and "Database Browser for SQLite". Website at:

Firebase SDK for Apple App Development

Graph database optimized for fast analysis and real-time data processing. It is provided as an extension to PostgreSQL.

Agnostic pagination in plain ruby

SQL-first Golang ORM

Mimesis is a Python library for generating fake but realistic data in multiple languages and locales.

🔥 🔥 🔥 A Free & Self-hostable Airtable Alternative

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries.

Business intelligence made simple

YDB is an open source Distributed SQL Database that combines high availability and scalability with strong consistency and ACID transactions

H2 is an embeddable RDBMS written in Java.

😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识

Free and Open Source, Distributed, RESTful Search Engine

For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.

Python ETL framework for stream processing, real-time analytics, LLM pipelines, and RAG.

Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB

A visual no-code/code-free web crawler/spider易采集：一个可视化浏览器自动化测试/数据采集/网页爬虫软件，可以无代码图形化的设计和执行爬虫任务。别名：ServiceWrapper面向Web应用的智能化服务封装系统。

DuckDB is an analytical in-process SQL database management system

Extremely fast Query Engine for DataFrames, written in Rust

The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.

TypeScript & JavaScript ORM for Node.js — supports PostgreSQL, MySQL, MariaDB, SQLite, SQL Server, Oracle, and more.

A scalable, distributed, collaborative, document-graph database, for the realtime web

CockroachDB — the cloud native, distributed SQL database designed for high availability, effortless scale, and control over data placement.

A library that provides an embeddable, persistent key-value store for fast storage.

A modern replacement for Redis and Memcached

Feature-rich ORM for modern Node.js and TypeScript, it supports PostgreSQL (with JSON and JSONB support), MySQL, MariaDB, SQLite, MS SQL Server, Snowflake, Oracle DB, DB2 and DB2 for IBM i.

Make Your Company Data Driven. Connect to any data source, easily visualize, dashboard and share your data.

The MongoDB Database

AI agents, automations and apps that run your operations. Model agnostic.

REST API for any Postgres database

A flexible distributed key-value database that is optimized for caching and other realtime workloads.

Open Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch ⚡ 🔍 ✨ Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences

Apache Flink