AI tool directory

Translate text and documents, manage terminology and refine writing. DeepL serves everyday translation as well as teams that need shared language rules and document workflows.

An open-source research agent that gathers information and produces source-linked reports. GPT Researcher supports web and local-document workflows, configurable language models and deeper research paths for developers who want control over the process.

A free OCR inference toolkit for developers who need to turn images into text, bounding boxes and confidence scores. RapidOCR packages recognition models with several runtime options and can run locally inside document-processing applications.

An open-source academic workspace for paper reading, translation, polishing and code explanation. GPT Academic combines configurable model connections with task-specific plugins, including PDF and LaTeX workflows, instead of relying only on a blank chat box.

A free offline desktop OCR application for screenshots, batches of images and scanned documents. Umi-OCR brings recognition engines into a practical interface with editable results, layout handling and searchable PDF workflows.

An open-source PDF translation project focused on scientific documents and bilingual comparison while preserving layout elements. The current next branch uses BabelDOC and supports local interfaces plus configurable translation services.

A local-first AI workspace for chatting with documents, organizing knowledge and connecting model-backed agents. The free desktop app and MIT-licensed self-hosted project can use local models, while external providers and hosted services are optional costs.

An AI research workspace for finding papers, asking questions about PDFs and organizing evidence. A free entry plan includes a limited monthly Agent allowance; advanced research and tool entitlements depend on the plan.

A self-hosted platform for building knowledge-base assistants and AI workflows, with document retrieval, model connections and tool integration. The GPLv3 community software offers a free starting point; inference and enterprise features are separate.

NetEase Youdao’s self-hosted knowledge-base question-answering project, combining document ingestion, retrieval and answer generation. It offers a free software route for teams prepared to manage models, hardware and document quality.

A document parsing engine that turns PDFs, scans and supported office files into structured content for AI workflows. Local use avoids a mandatory hosted subscription, with hardware requirements and additional license conditions to review.

A local document-processing toolkit that converts varied files into a common structured representation for search and generative AI. It combines PDF layout understanding, OCR and developer-friendly exports under an MIT software license.