Free open source alternatives for Android

Browse free and open source software that runs on Android. Find open-source alternatives, compare features, platforms and pricing, and pick the right Android tool for you.

Puzzle Brief

Daily Puzzle Guide provides daily puzzle hints, answers, and clear explanations to help players solve challenges, learn solving techniques, and improve their puzzle skills.

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Kirkify AI

Free AI face-swap tool for Charlie Kirkify memes with neon & glitch effects Kirkify is a cutting-edge web application that transforms any image into a hilarious Charlie Kirk-style meme using advanced AI face swap technology. Built with Next.js 15 and deployed on Cloudflare Pages, it offers lightning-fast processing with zero registration required. ## Key Features - **Free AI Face Swap**: Instantly convert any photo into a Charlie Kirk meme with our state-of-the-art AI engine - **No Signup Required**: Start creating memes immediately without any account registration or personal data collection - **Cross-Platform Compatibility**: Works flawlessly on all modern browsers across desktop, tablet, and mobile devices - **Privacy-Focused**: All processing happens client-side with no image storage on servers - **Social Sharing Ready**: One-click sharing to Twitter, Facebook, Reddit and other popular platforms ## How It Works 1. Visit [kirkify.uk](https://kirkify.uk) 2. Upload your source image and target Charlie Kirk photo 3. Our AI processes the face swap in seconds 4. Download your meme or share it directly to social media ## Technical Specifications - **Framework**: Next.js 15 with React 19 - **Styling**: Tailwind CSS for responsive design - **Language**: TypeScript for type safety - **Deployment**: Cloudflare Pages global CDN - **SEO Optimized**: Full meta tags, Open Graph, and structured data support ## Perfect For - Meme enthusiasts looking for the latest viral trends - Social media marketers creating engaging content - Developers exploring AI face swap implementations - Anyone wanting to create humorous content effortlessly

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Etsy Optima

EtsyOptima is an AI-powered Etsy SEO and listing optimization platform that helps Etsy sellers create high-ranking product titles, SEO tags, keyword-rich descriptions, and optimized listings in seconds. Upload a product photo or draft, and let AI generate everything you need to improve visibility and increase sales.

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Xiaoju Survey

XIAOJUSURVEY is a set of lightweight and safe questionnaire system base, providing one-stop product-level solutions for individuals and enterprises to quickly meet various online survey scenarios. The internal system has accumulated 40+ question types and 100+ selected templates, which are suitable for market research, customer satisfaction research, online examination, voting, reporting, assessment and many other scenarios. In terms of data ability, after hundreds of millions of degrees of grinding, it has precipitated online report capabilities such as sub-topic statistics, cross analysis, and multi-channel analysis, quickly meeting professional analysis. The open source project is centered on building a research base, building around platform capabilities, engineering architecture, and research and development system, and you can "quickly" create an "exclusive" questionnaire system.

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Nano Banana 2

AI-powered image generation and editing platform that creates marketing visuals, product shots, and social content with high-quality 4K output.

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AppFlowy

AppFlowy is an AI collaborative workspace where you achieve more without losing control of your data.

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Seeddance

Seeddance is an all-in-one AI creative platform featuring the Seedance 2.0 model. Itenables users to generate cinematic videos from text or images with multi-shotconsistency. The site also offers AI-powered image generation, text-to-music tools, andviral effects like AI hugging or kissing.

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Floor Plan AI

Floor Plan AI is an AI-assisted floor plan generator for creating reviewable 2D floor plan PNG drafts. Users can start from written ideas, room dimensions, or optional JPG, PNG, and WebP reference images, then review and download the generated plan image. Generated plans require human review and are not a substitute for professional CAD, BIM, structural, permitting, or legal work.

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Zoho Meeting

Zoho Meeting is a secure online meeting platform and webinar solution that helps you connect, collaborate, and work remotely with efficacy. Schedule online meetings, stream live webinars and enhance your remote collaboration experience today with our highly secure online meeting software.

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RoboForm

Next generation password manager. Leading the way in password management technology, security, and innovation. RoboForm Password Manager. Stay secure, productive, and efficient with our seamless free password manager and form filling solution.

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ImageUnblur

What does it do? Image Unblur is an AI-powered online tool designed to restore clarity to low-quality images. It automatically analyzes and sharpens blurry photos, removes pixelation, and upscales resolution. Whether you need to fix out-of-focus shots, make blurry text readable, or restore old damaged photos, it handles the complex processing in seconds to deliver crisp, high-definition results. Who is it for? It is built for anyone who needs to salvage or enhance a photo. This includes photographers fixing slightly missed focus, digital marketers needing crisp assets, students and researchers trying to decipher blurry documents or screenshots, and archivists looking to restore clarity to old family memories without needing complex editing software. What makes it unique? Unlike generic photo editors that simply sharpen edges (often introducing noise), Image Unblur uses state-of-the-art Generative AI models tailored for specific tasks—such as a dedicated mode for unblurring text and another for enhancing facial details. It operates entirely in the browser with no software credits required for basic use, and strictly prioritizes user privacy by automatically deleting all uploaded images shortly after processing.

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Tattoo AI

Tattoo AI is an AI-powered tattoo design tool that turns text prompts or reference images into clear tattoo concepts. Users can explore tattoo styles, compare design variations, preview ideas, and create references for tattoo planning before visiting a studio.

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New Relic

All-in-one observability. Data for engineers to monitor, debug, and improve their entire stack. Sign up for free, no credit card required with New Relic the all-in-one observability platform for engineers to monitor, debug, and improve their entire stack.

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Pinpoint Answer Today

Pinpoint Answer Today is a fan-built companion for the daily LinkedIn puzzle. We deliver rapid solutions, thoughtful analysis, and strategy guides while operating independently from any organization.

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AI Animate Image

AI Animate Image turns still photos into short cinematic videos in about 60 seconds. Upload a portrait, product shot, cartoon, old photo, or AI-generated character — pick a motion style from the curated prompt library, and the AI brings it to life with natural motion, camera movement, and optional audio. Powered by Kling 3.0, Google VEO 3.1, and Seedance 2.0. Every output is MP4, ready for TikTok, Reels, YouTube Shorts, or e-commerce. Free credits on signup, no credit card required.

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Sticky Password

The lifetime password manager. Simplify your digital life Control all your passwords Access on all your devices Protect your data from the dark web Stop forgetting passwords now. With our free password manager, you can log in securely, autofill forms in a second, and use your passwords wherever you go.

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AI Stock

AI Stock is an AI-driven stock analysis and investment research platform built to help investors produce professional-level equity research reports in just minutes. By integrating advanced artificial intelligence with real-time market data, company fundamentals, technical indicators, and news sentiment analysis, the platform provides in-depth insights across major global markets, including U.S. equities (NYSE & NASDAQ), Hong Kong stocks (HKEX), and China A-shares. With AIStock.tools, users can instantly generate comprehensive AI-powered stock reports that cover company overviews, valuation metrics, growth prospects, risk assessments, and forward-looking analysis. Investors can view real examples of AI-generated research in the reports library at https://aistock.tools/cases, and explore promising technology and AI-focused companies through the Top AI Stocks section at https://aistock.tools/top-ai-stocks. Beyond automated research, AIStock.tools also offers a Community Reports hub (https://aistock.tools/community), where users can discover shared analyses, collective intelligence, and community-driven investment ideas. New users can quickly get started with clear product explanations and onboarding materials available in the user guide at https://aistock.tools/guide, while flexible subscription plans and credit-based pricing details are outlined at https://aistock.tools/pricing. Designed for both individual investors and financial professionals, AIStock.tools brings institutional-grade stock analysis within reach—making high-quality investment research faster, smarter, and more accessible through modern AI technology.

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langchain

langchain is a free, open-source alternative to OpenAI Assistants API . The agent engineering platform. LangChain is a framework for building agents and LLM-powered applications. It helps you chain together interoperable components and third-party integrations to simplify AI application development — all while future-proofing decisions as the underlying technology evolves. Tip Just getting started? Check out Deep Agents — a higher-level package built on LangChain for agents that have built-in capabilites for common usage patterns such as planning, subagents, file system usage, and more. Quickstart uv add langchain from langchain . chat_models import init_chat_model model = init_chat_model ( "openai:gpt-5.5" ) result = model . invoke ( "Hello, world!" ) If you're looking for more advanced customization or agent orchestration, check out LangGraph , our framework for building controllable agent workflows. For an equivalent JS/TS library, check out LangChain.js . Tip For developing, debugging, and deploying AI agents and LLM applications, see LangSmith . LangChain ecosystem While the LangChain framework can be used standalone, it also integrates seamlessly with any LangChain product, giving developers a full suite of tools when building LLM applications. Deep Agents — Build agents that can plan, use subagents, and leverage file systems for complex tasks LangGraph — Build agents that can reliably handle complex tasks with our low-level agent orchestration framework Integrations — Chat & embedding models, tools & toolkits, and more LangSmith — Agent evals, observability, and debugging for LLM apps LangSmith Deployment — Deploy and scale agents with a purpose-built platform for long-running, stateful workflows Why use LangChain? LangChain helps developers build applications powered by LLMs through a standard interface for models, embeddings, vector stores, and more. Real-time data augmentation — Easily connect LLMs to diverse data sources and external/internal systems, drawing from LangChain's vast library of integrations with model providers, tools, vector stores, retrievers, and more Model interoperability — Swap models in and out as your engineering team experiments to find the best choice for your application's needs. As the industry frontier evolves, adapt quickly — LangChain's abstractions keep you moving without losing momentum Rapid prototyping — Quickly build and iterate on LLM applications with LangChain's modular, component-based architecture. Test different approaches and workflows without rebuilding from scratch, accelerating your development cycle Production-ready features — Deploy reliable applications with built-in support for monitoring, evaluation, and debugging through integrations like LangSmith. Scale with confidence using battle-tested patterns and best practices Vibrant community and ecosystem — Leverage a rich ecosystem of integrations, templates, and community-contributed components. Benefit from continuous improvements and stay up-to-date with the latest AI developments through an active open-source community Flexible abstraction layers — Work at the level of abstraction that suits your needs — from high-level chains for quick starts to low-level components for fine-grained control. LangChain grows with your application's complexity Resources Documentation — conceptual overviews and guides LangChain ecosystem overview — how LangChain, LangGraph, and Deep Agents fit together API reference — complete reference for all public classes, functions, and types Discussions — community forum for technical questions, ideas, and feedback LangChain Academy — comprehensive, free courses on LangChain libraries and products, made by the LangChain team Contributing Guide — how to contribute and find good first issues Code of Conduct — community guidelines and standards

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Opanorama.js

A 360-degree JS library based on Threejs with both gesture and gyroscope support.

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Pinpoint Solver

Pinpoint Solver gives you daily LinkedIn Pinpoint answers and solutions, with instant clues, interactive explanations, and streak protection—solve faster and enjoy the game every day.

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AdGuard

AdGuard is a cross-platform ad blocker that filters web content and protects privacy.

Adobe Premiere Pro

Adobe Premiere Pro is a professional video editing software for film, TV, and web.

Ad Blocker

Ad Blocker is a browser tool that removes intrusive ads and pop-ups from web pages.

AI / LLM Inference

AI/LLM Inference delivers fast, scalable deployment of large language models for generating AI responses.

Acorn 7

Acorn 7 is a Mac image editor for editing photos and creating graphics.

AI & Machine Learning

Free open-source AI & machine learning tools.