Free Open Source To-Do Lists Software

A mind mapper, and at the same time an easy-to-operate hierarchical editor with strong emphasis on folding. These two are not really two different things, just two different descriptions of a single application. Often used for knowledge and content management.

Joplin is a free and open source note-taking and to-do application that can handle a large number of notes in Markdown format, organize them into notebooks and synchronize them with various cloud services. All notes can also be copied, tagged, searched and modified directly from the app or through your own text editor. Notes that are exported from Evernote can be imported into Joplin, be it formatted content, resources, complete metadata or plain Markdown files. When notes are synchronized with cloud services, notebooks, tags and other metadata can easily be moved, inspected or backed up as plain text files. Supported cloud services include Nextcloud, OneDrive, Dropbox and WebDAV. Joplin is available for Windows, Linux, macOS, iOS and Android, with three types: desktop, mobile and terminal. All of them have similar user interfaces and can be synchronized with each other.

PNotes is light-weight, flexible, skinnable manager of virtual notes on your desktop. It supports multiple languages, individual note's settings, transparency and scheduling. Absolutely portable as well - no traces in registry. PNotes.NET edition requires .NET framework 4 Client Profile

Task Coach - Your friendly task manager. Task Coach is a free open source todo manager. It grew out of frustration about other programs not handling composite tasks well. In addition to flexible composite tasks, Task Coach has grown to include prerequisites, prioritizing, effort tracking, category tags, budgets, notes, and many other features. However, users are not forced to use all these features; Task Coach can be as simple or complex as you need it to be. Task Coach is available for Windows, Mac OS X, and GNU/Linux; and there is a companion iOS app.

Professional and powerful brainstorming and mind mapping software tool,open source,Eclipse Community Award 2008 winner,often used for capture ideas,knowledge/project management and GTD,supporting fishbones/org-charts/tree charts/spreadsheets,easy-to-use.

Ferdi is a desktop app that helps you get organized and work more efficiently by having all of your favorite apps in one application. Ferdi is based on Franz, a messaging browser that combines all messaging services into one application, but Ferdi offers a whole lot more. Ferdi puts all your web apps in one place, has "Find in Page" and "Quick Switch" features, makes all users Premium by default, and so much more! Ferdi supports multiple accounts on any service, has full proxy support and is also cross-platform. If you're looking for a much better experience from Franz or just want a more efficient way of using your apps and services, Ferdi is definitely the way to go. Ferdi is compatible with Franz so you can easily switch your existing Franz account if you have one.

Notes is an open source, cross-platform note-taking application. Write down your thoughts with ease, and always have them with you with this simple, streamlined app.

WikidPad is a wiki-like notebook for storing your thoughts, ideas, todo lists, contacts, or anything else you can think of to write down.

Collabtive is web based collaboration software. It is an Open Source alternative for proprietary tools like Active Collab or Basecamp. Features include: Projects, Instant Messenger, Tasks, Files, Timetracking, Multilanguage, Basecamp import

qOrganizer is a general organizer that includes a calendar with schedule,reminders,journal/notes for every day, to-do list.But provides features useful for students such as:timetable and a booklet for marks and absences.It's designed to be easy to use.

Standard Notes is a free and open source private notes app that features unmatched simplicity, end-to-end encryption and powerful extensions. You can compose any kind of note easily, and trust that you’re writing in total privacy.

Osmo is a handy personal organizer, which includes calendar, tasks manager, address book and notes modules. It was designed to be a small, easy to use and good looking PIM tool to help to manage personal information.

Ganib gives simpler ways to keep your projects organized and on track. Take advantage of easy features that help you quickstart and makes your team more efficient and productive. Open source Web based online agile project management collaboration software free, J2EE platform, MySql database with project dashboards & reporting. Organized Teams & Projects: Easily plan & manage projects with intuitive features to help your team deliver on time. Quickly focus on what's important, easily select actions to take. Be efficient for everyday work, project tasks, important details, and timelines. Tasks: Set milestones, tasks, subtasks with duration and dependencies to teams better organized. Scrum: Communicate effectively with your team using scrum, wikis & discussions to make better decisions. ​ Timesheet & Tracking: Track the time spent in real time using gTrack desktop tool with desktop screenshots. Bug Tracking: Manage bugs. Demo: http://www.ganib.com

RedNotebook is a graphical diary and journal helping you to keep track of notes and thoughts. It includes a calendar navigation, customizable templates for each day, export functionality and word clouds. You can also format, tag and search your entri

GloboNote is a free and easy to use desktop note taking application. It lets you create sticky notes, to-do lists, journals, reminders and other notes in one place. There are no limits to the number of sticky notes you can create. Notes can be organize by groups and search using the search tool. GloboNote can be run in any OS that has Java 8 installed.

Makagiga is an open-source, easy-to-use, portable application for doing a variety of tasks, such as todo listing, text editing, or RSS reading. Plugins are used to implement its various capabilities.

Omni-Notes is a powerful open-source note-taking application for Android designed to be both smart and simple. It has a clean and simple Material Design interface and is packed with plenty of smart features. These include image, audio and generic file attachment, a To-do list, Google Now integration, numerous widgets and so much more. Omni-Notes takes note-taking to a whole new level, making it more convenient and integrated. It's an ideal note-taking application particularly for old Android phones without such apps, giving users an updated look and experience when taking down notes.

SO Planning is a Simple Online Planning tool. Allows you to plan working periods for each person of your team, in a visual / printable result. Shows a line by person and the corresponding working days. See http://www.soplanning.org for details.

Tabbed notebook with RichText editor, multi-level notes and strong encryption. Added new features to Marek's KeyNote: checkboxes on children of selected nodes, hidden nodes, alarms on nodes.

GTD-Free is personal TODO/action manager inspired by GTD (Getting Things Done) method by David Allen. GTD-Free tries to be simple and easy to use.

SciPlore MindMapping is based on FreeMind but extended with features for students & researchers. It integrates mind maps with reference and pdf management (BibTeX support & PDF Bookmark import). Keywords: Mind maps, Mind Mapping, MindMap, JabRef

Rachota is a portable application for time-tracking your work on different projects. It runs on Windows, Linux, Solaris and Mac. Rachota displays time data in diagram form, creates customized reports or invoices and provides suggestions to increase your efficiency.

JTrac is a generic issue-tracking web-application that can be easily customized by adding custom fields and drop-downs. Features include customizable workflow, field level permissions, e-mail integration, file attachments and a detailed history view. While the last release happened a long time ago, work has resumed in 2021 to bring JTrac back to life. If you find bugs, have patches or questions, open a ticket and get the ball rolling. See https://sourceforge.net/p/j-trac/wiki/NewFeaturesTrunk/ for what's new, and grab the beta version if you want to give it a try at https://sourceforge.net/projects/j-trac/files/jtrac

Personal wiki that lives in one self-modifying XHTML containing software, interface and data. Very useful for creating small websites and mantaining notes or todo-lists; completely javascript-programmable, supports encryption and file embedding.

This is a pomodoro timer for windows. This program runs on all Windows Platforms. Only Microsoft .NET 2.0 Framework is required.