Open Source Text Editors
Sort By:
Browse free open source Text Editors and projects for Windows and Apple iPhone below. Use the toggles on the left to filter open source Text Editors by OS, license, language, programming language, and project status.
-
Gen AI apps are built with MongoDB AtlasMongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
-
Simple, Secure Domain RegistrationRegister or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
-
1
Mozc
Mozc - a Japanese Input Method Editor designed for multi-platform
Mozc is an open source Japanese Input Method Editor (IME) developed by Google, designed to provide Japanese text input across multiple operating systems including Android, macOS, Windows, GNU/Linux, and Chromium OS. The project originated as a subset of Google Japanese Input, released publicly under the BSD 3-Clause license for community use and development. Mozc offers core IME functionality such as text conversion, prediction, and dictionary-based input, enabling users to efficiently type and edit Japanese text. While Mozc shares much of its codebase with Google’s internal IME, it operates as an independent open source project without official support, guarantees, or stable release cycles. Developers can build Mozc from source for their preferred platform, and the repository includes detailed build instructions for Android, Linux, macOS, and Windows environments. -
2
Simplenote for Electron
Simplenote for Web, Windows, and Linux
A Simplenote React client packaged in Electron. All your notes, synced on all your devices. Get Simplenote now for iOS, Android, Mac, Windows, Linux, or in your browser. Notes stay updated across all your devices, automatically and in real-time. There’s no “sync” button, It just works. Add tags to find notes quickly with instant searching. Share a to-do list, post some instructions, or publish your notes online. Notes are backed up with every change, so you can see what you noted last week or last month. Write, preview, and publish your notes in Markdown format. Apps, backups, syncing, sharing, it’s all completely free. Download Simplenote for any device and stay in sync, all the time, everywhere. -
3
Standard Notes App
Think fearlessly with end-to-end encrypted notes and files
Standard Notes is a free, secure note-taking app with powerful end-to-end encryption, unparalleled privacy features, and seamless cross-platform syncing on unlimited devices. Standard Notes is a secure digital notes app that protects your notes and files with audited, industry-leading end-to-end encryption. Only you have access to the keys required to decrypt your data. Write and store all your notes and files in one secure place and seamlessly access them across all your devices. Note-taking services like Evernote, Google Keep, Notion, and Simplenote cannot prevent employees and governments from reading your data. Standard Notes features advanced security and privacy controls that protect your data against hacks, data breaches, government access, and even employee access. -
4
HarfBuzz
Open source text shaping engine
HarfBuzz is an open source text-shaping engine with a C API that turns fonts and strings of character codes into a form that is correctly arranged for the corresponding language and writing system. This is essentially the process of text shaping: translating a string of character codes into a properly arranged sequence of glyphs that can be rendered onto a screen or into final output form for inclusion in a document. This shaping depends on a number of factors: the input string, the active font, the script (or writing system) of the string, and the string's language. Various font formats have their own set of standard text-shaping rules. With Harfbuzz, you can properly shape all the major writing systems. HarfBuzz is cross-platform and supports all major software platforms and font formats. -
Our Free Plans just got better! | Auth0You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
-
5
VisualMathEditor
LaTeX, AscciMath and MathML editor developed in Javascript and HTML
Visual Math Editor New Version “ It now offers more than 730 LaTeX symbols and 210 AsciiMath symbols. It now works in all modern browsers without plugin. It now works with LaTeX, AsciiMath, MathML and HTML syntaxes. It improves the ergonomics of the user interface.” VisualMathEditor is a LaTeX, AsciiMath and MathML editor developed in Javascript and HTML. It operates independently on the web or locally. It has many features and menus that help the equation-entry and allow their posting and backup. Formulas : - math physics symbols - operation symbols - logical symbols - arrows symbols - relation symbols - bracket symbols - differential symbols - functions symbols - integral symbols - matrix symbols - sqrt & frac symbols - sub & sup symbols - sum & prod symbols - greek characters -
6
Verti-Horiz Text File Merger
Web app to merge multiple TXT files vertically or horizontally
# Verti-Horiz Text File Merger An offline standalone web app to merge TXT files vertically or append them horizontally. ## Vertical Stacking The Vertical Merger combines multiple text files into one, joining them one after another in alphabetical filename order. ## Horizontal Append The Horizontal Appender combines two text files line by line, merging corresponding lines from each file. This program is free, open source, private and offline. All operations happen locally on your computer, simply using your browser, no data is sent anywhere. Works via any modern web browser, so you can use it on any operating system. Win, mac, linux, android, etc. -
7
DOCX Document Converter
Convert .docx to .md/.txt and .html. Free, unlimited, fast.
A simple, free, unlimited, secure web-based tool that converts Microsoft Word documents (.docx) into Markdown (.md/.txt) and HTML files. Perfect for developers, writers, and anyone who needs to transform .docx MS Office Word documents into web-friendly or AI context friendly formats. Unlike those other jerks on the web that charge many dollars per month for this, I made it free, unlimited and open source. This is a better version of 'convert docx to txt' since .md files can be opened in notepad++ just the same AND they preserve formatting too! Meanwhile HTML files will even embed images allowing you to view them just like they were in the original document. -
8
Boostnote is an open source note-taking app for programmers. Apps available for Mac, Windows, Linux, Android and iOS. Built with Electron, React + Redux, Webpack and CSSModules.
-
9
Text Line Duplicate Remover
Remove duplicate lines from your text
This standalone offline web browser tool helps you remove duplicate lines from your text, with additional text processing options. Simply open it in your browser by double-clicking the html file. It also includes the source code too. I made this when I was working with long lists of entries and needed something to automatically clean them up. As a bonus you can also change the Sentence Case of the text, make it lowercase, UPPERCASE or Sentence case. -
Build Securely on Azure with Proven FrameworksMoving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
-
10
Draft.js
React framework for building text editors
Draft.js is a framework for building rich text editors in React, powered by an immutable model and abstracting over cross-browser differences. Draft.js allows you to build any type of rich text input, whether you're only looking to support a few inline text styles or building a complex text editor for composing long-form articles. We provide the building blocks to enable the creation of a broad variety of rich text composition experiences, from basic text styles to embedded media. Draft.js fits seamlessly into React applications, abstracting away the details of rendering, selection, and input behavior with a familiar declarative API. The Draft.js model is built with immutable-js, offering an API with functional state updates and aggressively leveraging data persistence for scalable memory usage. -
11
Hitor
History text
Hitor is a history recorder and text editor. It is a simple and easy tool for human beings on the earth to fast finish daily text work. -
12
Markdown Editor With WYSIWYG Controls
An Easy to use Browser Based MarkDown Editor With Live Preview Panel
Browser Based, Cross Platform, Supporting all Operating Systems, Easy Application. No need to remember any markdown syntax anymore. Just Select Your Text and Click on any of the Buttons Above ( Except for some buttons ). See the Below Screenshot for Details. Notes: This editor has been tested fully on the Firefox Web Browser and is quite successful. -
13
-
14
溫度日記 Hearty Journal
療癒系心情日記 App
Hearty Journal is a beautiful diary and personal journal application with a focus on privacy. Securely record your thoughts, feelings, ideas and private moments with the ease of writing on a pad of paper. Its aesthetic looks like a piece of notebook paper with handwritten words on it. Also, beautiful themes, lovely journal stickers and luxury fonts are available in the app. Hearty Journal works on both your computer and phone (Windows, macOS, iOS and Android are supported). Moreover, to keep your memories safe, entries will be encrypted synced to the cloud for backup. A sanctuary for your mind and soul, Hearty Journal will help pour your feelings/brain dump, increase your positive energy, be more grateful and a calmer mind by building healthy thinking through journaling.
- Previous
- You're on page 1
- Next
