Org-mode is for keeping notes, maintaining ToDo lists, doing project planning, and authoring with a fast and effective plain-text system. 

Org is implemented on top of Outline mode, which makes it possible to keep the content of large files well structured. Visibility cycling and structure editing help to work with the tree. Tables are easily created with a built-in table editor. Org supports TODO items, deadlines, timestamps, and scheduling. It dynamically compiles entries into an agenda that utilizes and smoothly integrates much of the Emacs calendar and diary. Plain text URL-like links connect to websites, emails, Usenet messages, BBDB entries, and any files related to the projects. For printing and sharing notes, an Org file can be exported as a structured ASCII file, as HTML, or (TODO and agenda items only) as an iCalendar file. It can also serve as a publishing tool for a set of linked web pages.

Org mode

Windows

Linux

GNU Emacs

Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system.

Spacemacs is an beautiful Emacs distribution designed for both https://alternativeto.net/software/gnu-emacs/ and https://alternativeto.net/software/vim/ users.

Features

- Access documentation in Emacs with SPC h SPC.
- Beautiful, distraction free UI and its functional mode-line.
- All key bindings are accessible by pressing the space bar or alt-m.
- Commands have mnemonic prefixes like SPC b for all the buffer commands or SPC p for the project commands.
- Discover hundreds of ready-to-use packages nicely organised in configuration layers following a set of conventions.

Spacemacs

Spacemacs is an beautiful Emacs distribution designed for both <a href='//alternativeto.net/software/gnu-emacs/'><img alt='Small GNU Emacs icon' class='mini-app-icon' src='//d2.alternativeto.net/dist/icons/gnu-emacs_133126.png?width=36&height=36&mode=crop&upscale=false' />GNU Emacs</a> and <a href='//alternativeto.net/software/vim/'><img alt='Small Vim icon' class='mini-app-icon' src='//d2.alternativeto.net/dist/icons/vim_96253.png?width=36&height=36&mode=crop&upscale=false' />Vim</a> users.Features

A Dropbox-like file manager that connect to your existing storage: FTP, SFTP, WebDAV, Git, S3, Minio, Dropbox, Google Drive.

Features:
- Manage your files from a browser
- Flexible Share mechanism
- Super fast
- Photo management
- Video player
- Video transcoding (mov, mkv, avi, mpeg, and more)
- Image viewer
- Image transcoding (raw images from Nikon, Canon, and more)
- Photo management
- Audio player
- Full Text Search
- Shared links are full fledge network drive
- Office documents (docx, xlsx and more)
- User friendly
- Mobile friendly
- Customisable
- Upload files and folders
- Multiple cloud providers and protocols, easily extensible
- Nyan cat loader
- Quick access: frequently access folders are pin to the homepage
- Emacs, VIM or Sublime keybindings ;)

Filestash

Online

Self-Hosted

Software as a Service (SaaS)

A Dropbox-like file manager that let you manage your data anywhere it is located: FTP, SFTP, WebDAV, Git, S3, Minio, Dropbox, Google Drive.

Very simple webpage with a simple textbox, a checkbox for selecting one of several languages and an option to make it private and to run the code or not.

Has a little code sharing and references as well.

Supported languages:
C
C++
D
Haskell
Lua
OCaml
PHP
Perl
Plain Text
Python
Ruby
Scheme
Tcl

codepad

Very simple webpage with a simple textbox, a checkbox for selecting one of several languages and an option to make it private and to run the code or not.

Evil is an extensible vi layer for Emacs. It emulates the main features of Vim, and provides facilities for writing custom extensions.

Evil