Showing 4729 open source projects for "java open source"

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    Cloud tools for web scraping and data extraction

    Deploy pre-built tools that crawl websites, extract structured data, and feed your applications. Reliable web data without maintaining scrapers.

    Automate web data collection with cloud tools that handle anti-bot measures, browser rendering, and data transformation out of the box. Extract content from any website, push to vector databases for RAG workflows, or pipe directly into your apps via API. Schedule runs, set up webhooks, and connect to your existing stack. Free tier available, then scale as you need to.
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  • 1
    HStreamDB

    HStreamDB

    HStreamDB is an open-source, cloud-native streaming database

    HStreamDB is an open-source, cloud-native streaming database for IoT and beyond. Modernize your data stack for real-time applications. By subscribing to streams in HStreamDB, any update of the data stream will be pushed to your apps in real-time, and this promotes your apps to be more responsive. You can also replace message brokers with HStreamDB and everything you do with message brokers can be done better with HStreamDB.
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  • 2
    Vercel Storage

    Vercel Storage

    Vercel Postgres, KV, Blob, and Edge Config

    Vercel Storage is a unified SDK and platform integration layer for accessing various storage backends like Redis, Postgres, and KV stores. It simplifies reading, writing, and managing data in serverless applications hosted on Vercel. The SDK provides a consistent developer experience with optimized performance for edge functions.
    Downloads: 0 This Week
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  • 3
    Advanced Alchemy

    Advanced Alchemy

    A carefully crafted, thoroughly tested, optimized companion library

    advanced-alchemy is an opinionated ORM toolkit built on SQLAlchemy and designed for integration with the Litestar web framework. It simplifies common ORM patterns such as CRUD, pagination, and async support while providing extensibility and best practices out of the box. It’s designed to accelerate backend development for modern Python web apps.
    Downloads: 0 This Week
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  • 4
    django-pgtrigger

    django-pgtrigger

    Write Postgres triggers for your Django models

    django-pgtrigger is a Django library for defining and managing PostgreSQL triggers directly in Python code. It allows developers to create database-level logic like automatic field updates, auditing, or validation without writing raw SQL. It’s ideal for teams that want stronger data integrity while keeping logic version-controlled.
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  • Turn more customers into advocates. Icon
    Turn more customers into advocates.

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  • 5
    PgAgroal

    PgAgroal

    High-performance connection pool for PostgreSQL

    pgagroal is a high-performance PostgreSQL connection pooler written in C, designed for minimal latency and efficient resource usage. It provides features like secure authentication, hot reloading, and support for multiple databases, making it suitable for low-latency applications and microservice architectures. pgagroal is optimized for fast startup, low overhead, and easy integration.
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  • 6
    Django Postgres Extra

    Django Postgres Extra

    Bringing all of PostgreSQL's awesomeness to Django

    django-postgres-extra is a Django extension that enhances PostgreSQL support by adding advanced features like native upserts, materialized view support, and better constraint handling. It improves developer productivity by exposing PostgreSQL-specific capabilities in a Django-friendly way while maintaining ORM consistency.
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  • 7
    RUM

    RUM

    RUM access method - inverted index with additional information

    RUM is a PostgreSQL extension that enhances full-text search performance by implementing a new type of GIN index. It allows fast ranking, filtering, and search in a single index scan, improving query efficiency in applications that rely heavily on text search. RUM is useful for advanced search features like faceting and relevance ranking.
    Downloads: 0 This Week
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  • 8
    ANXS PostgreSQL

    ANXS PostgreSQL

    Fairly full featured Ansible role for Postgresql

    ANXS PostgreSQL is an Ansible role that simplifies the automated installation and configuration of PostgreSQL servers. It allows you to manage Postgres users, databases, extensions, and configuration parameters across environments. Built for infrastructure as code workflows, it helps DevOps teams maintain consistent Postgres setups.
    Downloads: 0 This Week
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  • 9
    Aerich

    Aerich

    A database migrations tool for TortoiseORM, ready to production

    Aerich is a lightweight database migration tool built for Tortoise ORM, an async ORM for Python. It handles schema evolution through versioned migrations, enabling developers to update and rollback database changes with ease. Designed for asyncio-based applications, Aerich is ideal for fast-moving Python projects that need simple migration control without heavy dependencies.
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  • DAT Freight and Analytics - DAT Icon
    DAT Freight and Analytics - DAT

    DAT Freight and Analytics operates DAT One truckload freight marketplace

    DAT Freight & Analytics operates DAT One, North America’s largest truckload freight marketplace; DAT iQ, the industry’s leading freight data analytics service; and Trucker Tools, the leader in load visibility. Shippers, transportation brokers, carriers, news organizations, and industry analysts rely on DAT for market trends and data insights, informed by nearly 700,000 daily load posts and a database exceeding $1 trillion in freight market transactions. Founded in 1978, DAT is a business unit of Roper Technologies (Nasdaq: ROP), a constituent of the Nasdaq 100, S&P 500, and Fortune 1000. Headquartered in Beaverton, Ore., DAT continues to set the standard for innovation in the trucking and logistics industry.
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  • 10
    Picsur

    Picsur

    An easy to use, selfhostable image sharing service like Imgur

    Picsur is a lightweight, self-hosted image hosting service inspired by Imgur. Built using Go and Vue, it offers fast image uploads, user accounts, and a minimal UI. Picsur is designed for private or small-scale image sharing and gives users full control over their data and hosting environment.
    Downloads: 0 This Week
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  • 11
    ERAlchemy

    ERAlchemy

    Entity Relation Diagrams generation tool

    ERAlchemy is a tool that generates Entity-Relationship (ER) diagrams from databases or SQLAlchemy models and vice versa. It’s useful for database documentation, reverse engineering, and understanding complex schemas. ERAlchemy can export diagrams in formats like Graphviz and Mermaid, making it easy to include in reports or markdown files.
    Downloads: 0 This Week
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  • 12
    DoltgreSQL

    DoltgreSQL

    DoltgreSQL - Version Controlled PostgreSQL

    DoltgreSQL is an experimental Postgres fork that adds Git-like version control to your database. It allows users to commit, branch, merge, and revert changes to data and schema, bringing collaborative workflows to SQL databases. DoltgreSQL is designed for teams who want full auditability and control over every change made in their data layer.
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  • 13
    Bob

    Bob

    SQL query builder and ORM/Factory generator for Go

    Bob is a SQL query builder for Go that emphasizes composability, type safety, and maintainability. It allows developers to construct dynamic queries in a programmatic and reusable way, supporting both simple and complex SQL logic. Bob helps avoid raw string concatenation, making Go-based database interactions more robust and testable.
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  • 14
    pg-mem

    pg-mem

    An in memory postgres DB instance for your unit tests

    pg-mem is an in-memory PostgreSQL emulator for Node.js and TypeScript that allows you to simulate a Postgres database without a real server. It’s perfect for unit testing and development scenarios where spinning up a full database would be too heavy. pg-mem supports many Postgres features and is compatible with various ORMs like TypeORM and Sequelize.
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  • 15
    sqldef

    sqldef

    Idempotent schema management for MySQL, PostgreSQL, and more

    sqldef is a schema migration tool that automatically generates SQL migration statements by comparing database schemas. Instead of writing migrations manually, developers define the desired schema, and sqldef computes the difference. It's compatible with MySQL, PostgreSQL, SQLite, and others, making migrations safer and more maintainable.
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  • 16
    Sqitch

    Sqitch

    Sensible database change management

    Sqitch is a database change management system built around SQL and version control. Unlike migration frameworks that use up/down scripts, Sqitch focuses on dependency-based deployment, allowing developers to write native SQL for changes while tracking changes in Git, Mercurial, or other SCMs. It works across many databases and promotes precision and auditability in schema versioning.
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  • 17
    PolarDB for PostgreSQL

    PolarDB for PostgreSQL

    A cloud-native database based on PostgreSQL developed by Alibaba Cloud

    PolarDB for PostgreSQL is Alibaba Cloud's cloud-native, distributed version of PostgreSQL designed for high availability, scalability, and performance. It enhances standard PostgreSQL with features like shared storage, compute-storage separation, and parallel processing. PolarDB supports cloud-native workloads, offering enterprise-grade capabilities while maintaining PostgreSQL compatibility.
    Downloads: 0 This Week
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  • 18
    Doctrine Migrations Bundle

    Doctrine Migrations Bundle

    Symfony integration for the doctrine/migrations library

    The Doctrine Migrations Bundle is an extension for Symfony that integrates the Doctrine Migrations library, allowing developers to version and manage database schema changes in a structured and consistent way. It simplifies the process of creating, executing, and tracking database migrations, making it essential for projects that undergo frequent schema updates or improvements. The bundle is highly configurable and supports custom migration commands.
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  • 19
    Predis

    Predis

    A flexible and feature-complete Redis/Valkey client for PHP

    Predis is a flexible and feature-rich PHP client library for Redis. It offers a simple interface to interact with Redis servers and supports a wide variety of Redis commands. Predis is known for its ease of use, performance, and its ability to handle Redis clusters with minimal configuration. It can be used with any PHP-based application that requires caching or data storage in Redis.
    Downloads: 0 This Week
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  • 20
    Bitalosdb

    Bitalosdb

    Bitalosdb is a high-performance KV storage engine

    BitalosDB is a distributed, high-performance key-value database designed for cloud-native applications. It is optimized for scalability, supporting large workloads while maintaining low latency and high availability.
    Downloads: 0 This Week
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  • 21
    Bdash

    Bdash

    Simple SQL Client for lightweight data analysis

    Simple SQL Client for lightweight data analysis. You can share the result with gist. Supports MySQL, PostgreSQL (Amazon Redshift), SQLite3, Google BigQuery, Treasure Data, Amazon Athena. You can download and install from Web Site or Releases.
    Downloads: 0 This Week
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  • 22
    lmdb-js

    lmdb-js

    Simple, efficient, ultra-fast, scalable data store wrapper for LMDB

    This is an ultra-fast NodeJS, Bun, and Deno interface to LMDB; probably the fastest and most efficient key-value/database interface that exists for storage and retrieval of structured JS data (objects, arrays, etc.) in a true persisted, scalable, ACID compliant database. It provides a simple interface for interacting with LMDB, as a key-value db, which makes it easy to fully leverage the power, crash-proof design, and efficiency of LMDB using intuitive JavaScript, and is designed to scale...
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  • 23
    node-oracledb

    node-oracledb

    Oracle Database driver for Node.js maintained by Oracle Corp

    ...Older versions of node-oracledb may work with older versions of Node.js. Node-oracledb supports basic and advanced features of Oracle Database and Oracle Client. The node-oracledb module is open source and maintained by Oracle Corp. It is stable, well documented, and has a comprehensive test suite. Oracle gratefully acknowledges the contributions to node-oracledb that have been made by the community. Inbuilt Connection Pool with Queuing, Aliasing, Tagging, Draining, Heterogeneous and Homogeneous connections, Proxy connections and Liveness checking. ...
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  • 24
    Tarantool

    Tarantool

    Get your data in RAM, get compute close to data, enjoy the performance

    ...Tarantool is tolerant of write-heavy loads. It also allows keeping full-featured applications close to the data, thus reducing data access network latency to zero. The open-source Community Edition lets you develop applications and speed up a system in operation. It features synchronous replication, affords easy scalability, and includes tools to develop efficient applications. The Tarantool community helps with any practical questions regarding the Community Edition. Large enterprises have demanding requirements for information safety and security. ...
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  • 25
    SpringBlade

    SpringBlade

    Microservice architecture that provides SpringCloud solutions

    BladeX is a well-designed microservice architecture that provides a full set of SpringCloud solutions. Open source China's first batch of microservice architectures that perfectly integrate SpringCloud Alibaba series components are upgraded and optimized based on stable production commercial projects, and are closer to enterprise-level needs. Pursuing enterprise development More efficient, easier to deploy, and more stable. The multi-tenant architecture that meets the Chinese-style needs supports flexible combinations of multiple modes such as multi-tenant-one database, one-tenant-one database, and multi-tenant multi-database. ...
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