Awesome

Total Commander is a shareware Orthodox File Manager (OFM) for Windows.
Some features include a built-in FTP client, file compare, archive file navigation, and a multi-rename tool with regular expression support.

Features include:

Two file windows side by side
Multiple language and Unicode support
Enhanced search function
Compare files (now with editor) / synchronize directories
Quick View panel with bitmap display
ZIP, ARJ, LZH, RAR, UC2, TAR, GZ, CAB, ACE archive handling + plugins
Built-in FTP client with FXP (server to server) and HTTP proxy support
Parallel port link, multi-rename tool
Tabbed interface, regular expressions, history+favorites buttons
Thumbnails view, custom columns, enhanced search
Compare editor, cursor in lister, separate trees, logging, enhanced overwrite dialog etc.
Unicode names almost everywhere, long names (>259 characters), password manager for ftp and plugins, synchronize empty dirs, 64 bit context menu, quick file filter (Ctrl+S)
USB port connection via special direct transfer cable, partial branch view (Ctrl+Shift+B), and many improvements to ftp, synchronizing and other functions
And many more!

Typora will give you a seamless experience as both a reader and a writer. It removes the preview window, mode switcher, syntax symbols of markdown source code, and all other unnecessary distractions. Replace them with a real live preview feature to help you concentrate the content itself.

It has features of:

1. Markdown support including tables, code fences with syntax highlight, LaTeX, Table of Contents.
2. Cross-platform.
3. The real live preview and WYSIWYG features.
4. Beautiful interface and Custom CSS theme support.
5. Easy export

Typora will only be free during its Beta period. When it gets out of Beta, it will be a paid app.

DevDocs combines multiple API documentations in a fast, organized, and searchable interface.

• Fully-functional offline
• Fast, fuzzy search
• Toggle docs on/off
• Multi-version support
• Keyboard shortcuts
• Retina support
• Mobile version
• Dark theme
• Free and open source

Software that makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.

Chromium is the open-source browser project from which Google Chrome takes its source.

Windwos

Mac

TagSpaces is an open source personal data manager.
It helps you organize and browse your files on every platform.

Cross-platform file tagging and file finding

Organize your photos, ebooks, music, recipes or invoices in the same way on almost every platform. We currently support Windows, Linux, OS X, Android, Firefox and Chrome
With the help of tags you can do research better or you can manage projects using the GTD methodology.
The application persists the tags in the file names. As a consequence, the tagging information is not vendor locked and can be used even without the TagSpaces application. The absence of a database, makes syncing of the tag meta information easy across different devices with services like Dropbox.
TagSpaces features basic file management operations, so it can be used as tag-based file manager.

Evernote alternative for note taking and information management

You can create and edit notes in plain text, MARKDOWN and HTML file formats.
You can organize webpages saved in for example MHT or MHTML format.
You use TagSpaces to organize you e-book library, containing for example PDF or EPUB books.
You can create a personal wiki for tracking of your projects, ideas or memories.

Preview and navigation of your local file content

Browse your file system in a convenient and responsive user interface, familiar from the modern cloud based services.
Browse your digital photos, listen your local music and video content, open PDF documents and MHTML files. The list of supported files types for previewing and editing is constantly growing.
This feature makes the Chrome version of TagSpaces a perfect addition to the Google's Chromecast, with which your can cast your local documents, images, videos and music to your TV or other presentation device.

Self-hosted software is open source, Basic plan is free and Pro plan is paid.

WeChat is a complete mobile communication and private social networking app. Free, cross-platform, and full-featured, WeChat is the best way to keep in touch with everyone you care about.

Features
WECHAT OUT CALLS: Make calls to landlines and mobile around the globe at low rates (in certain regions only).
• MULTIMEDIA MESSAGING: Send video, image, text, and voice messages.
• GROUP CHAT & CALLS: Create group chats with up to 500 people and group video calls up to 9 people.
• FREE VOICE & VIDEO CALLS: High-quality free calls to anywhere in the world.
• STICKER GALLERY: Hundreds of free, fun, animated stickers to express your feelings from some of your favorite cartoons and movies.
• MOMENTS: Share your best moments on your personal photo stream.
• BETTER PRIVACY: WeChat gives you the highest level of control over your privacy. It's the only messaging app to be certified by TRUSTe.
• MEET NEW FRIENDS: Use “Friend Radar”, “People Nearby” and “Shake” to meet others.
• REALTIME LOCATION: Instead of having to tell others where you are, just use real-time location sharing.
• LANGUAGE SUPPORT: Localized in 20 different languages and can translate messages to any language.
• AND MORE: Desktop app, custom wallpapers, custom notifications, and Official Accounts.

for chinese http://flyonzone.ys168.com/

Zeal is a simple offline API documentation browser inspired by Dash (OS X app), available for Linux and Windows.

Quickly search documentation using Alt+Space (or customised) hotkey to display Zeal from any place in your workspace.
Search in multiple sets of documentation at once.
Don't be dependend on your internet connection.

Slack brings all your communication together in one place. It's real-time messaging, archiving and search for modern teams.

A digital notebook application that gives people one place to gather notes and information. .

draw.io is a free online diagram drawing application for workflow, BPM, org charts, UML, ER, network diagrams. No login or registration are required and features include the ability to save locally (including svg), a range of stencils, .vsdx, Lucidchart and Gliffy import and real time diagram sharing.

A command-line installer for Windows.

SpaceSniffer is a tool application that gives you an idea of how folders and files are structured on your disks. By using a Treemap visualization layout, you have immediate perception of where big folders and files are situated on your devices. If you need to understand why no more free space is left on media, keep following bigger elements. Maybe you want to focus only on particular file types... ok. Just type the file type on the filter field (example: .jpg) and press enter. The view will react and show you only JPEG files.
Want to exclude files? Then type a starting pipe before the filter (example: |.jpg) and press enter. The view will show everything but JPEG files.

If you want to keep track of examined files you can tag them. Four colors are available. You can also filter on tags (example: :red will show only red tagges files, :all will show all tagged files and so on). You can also exclude tagged files (example: |:red will exclude all red tagged files)

Want to know if you have old files? Type the condition in the filter field (example: >2years) and the view will react accordingly.

You can also filter on file size, file date and combine all filters
(example: *.jpg;>1mb;<3months;|:yellow)

PowerShell (including Windows PowerShell and PowerShell Core) is a task automation and configuration management framework from Microsoft, consisting of a command-line shell and associated scripting language built on the .NET Framework.

"Everything" is an administrative tool that locates files and folders by filename instantly for Windows. Unlike Windows search "Everything" initially displays every file and folder on local or removable NTFS volumes on your computer (hence the name "Everything"), and on mapped network drives with ETP server and an everything installation too. You type in a search filter to limit what files and folders are displayed. 19 languages supported.

How can "Everything" index a mapped network drive?
To search a networked computer you will need to run Everything on both computers.
One computer will need to Start an ETP server.
The other computer will need to connect to that ETP server.

To start an ETP server:

1. In Everything, On the Tools menu, click Start ETP server.

To connect to an ETP server:

1. In Everything, On the Tools menu, click Connect to ETP Server....
2. Type in the ETP server name.
3. Type in the ETP server port.
4. Type in the ETP server user.
5. Type in the ETP server password.
6. Click OK.

The main features of 7-Zip

High compression ratio in 7z format with LZMA and LZMA2 compression
Supported formats:
Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z.
For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip
Strong AES-256 encryption in 7z and ZIP formats
Self-extracting capability for 7z format
Integration with Windows Shell
Powerful File Manager
Powerful command line version
Plugin for FAR Manager
Localizations for 87 languages

7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2012 / 2008 / 2003 / 2000 / NT. There is a port of the command line version to Linux/Unix.

1Password creates strong, unique passwords for all of your sites and logs you in with a single tap (or click).

A single click opens your browser, opens a site, fills in your username and password, and logs you in.
Our Strong Password Generator is your key to password liberation.
One click creates a strong, unique password for each account, and our browser extension fills it into the website automatically.

Organize your vault

Mark your most important or frequently used items for quick access and sync this list among all your devices.
Drag any mix of 1Password Logins, Secure Notes, and other items into folders for work, finances, social media, or any other grouping you need.
Adding tags to 1Password items is a snap; focusing on them to get things done is even easier.

Our new service keeps you informed about your security.
Watchtower securely checks your logins for known vulnerabilities and tells you which sites need new passwords.

Worlds leading online storage and file sync service. You get 2GB free. Apps for all major platforms.

A secure socks5 proxy, designed to protect your Internet traffic.

• Super Fast
  Bleeding edge techniques using Asynchronous I/O and Event-driven programming.

• Flexible Encryption
  Secured with industry level encryption algorithm. Flexible to support custom algorithms.

• Mobile Ready
  Optimized for mobile device and wireless network, without any keep-alive connections.

• Cross Platform
  Avaliable on multiple platforms, including PC, MAC, Mobile (Android and iOS) and Routers (OpenWRT).

• Open Source
  Totally free and open source. A worldwide community devoted to deliver bug-free code and long-term support.

• Easy Deployment
  Easy deployment with pip, npm, aur, freshports and many other package manager systems.

Privoxy is a non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. Privoxy has a flexible configuration and can be customized to suit individual needs and tastes. It has application for both stand-alone systems and multi-user networks.

GanttProject is a cross-platform desktop tool for project scheduling and management. It runs on Windows, Linux and MacOSX, it is free and its code is opensource. What can it do?

• Gantt chart. - Create work breakdown structure, draw dependencies, define milestones.
• Resources. - Assign human resources to work on tasks, see their allocation on the Resource Load chart.
• PERT chart. - Generate PERT chart from Gantt chart.
• Export. - Save charts as PNG images, generate PDF and HTML reports.
• Interoperate. - Import projects

Microsoft To-Do is a simple and intelligent to-do list that makes it easy to plan your day. Whether it's for work, school or home, To-Do will help you increase your productivity and decrease your stress levels. It combines intelligent technology and beautiful design to empower you to create a simple daily workflow. Organize your day with To-Do's smart Suggestions and complete the most important tasks or chores you need to get done, every day. To-Do syncs between your phone and computer, so you can access your to-dos from school, the office, or the grocery store or even while you're traveling around the world.

You can quickly add, organize and schedule your to-dos while you're on the go. With important to-dos that you really shouldn't forget you can add reminders and due dates—we'll remember them for you. And if you have to-dos that you need to tick off on a daily, weekly or yearly basis you can set up recurring due dates to remind you each and every time.

What areas of your life do you want to be more productive in? You can have a color-coded list for each. Now you can quickly add your homework to one list, your groceries to another, your packing list, your work projects and your home DIY projects to yet more lists. You can create as many lists as fits your lifestyle. And if you follow a productivity system such as GTD (David Allen's Getting Things Done Methodology) then you can create a Someday list or a Follow-up list. To-Do is here for you, whether your goals are for this week or in 5 years time.

Foxit Reader is a free and light-weight multi-platform PDF document viewer. Its core function is compatible with PDF Standard 1.7.

Whether you're a consumer, business, government agency, or educational organization, you need to read, create, sign, and annotate (comment on) PDF documents and fill out PDF forms. Foxit Reader is a small, lightning fast, and feature rich PDF viewer which allows you to open, view, sign, and print any PDF file. Foxit Reader is the only high volume PDF reader providing a complete PDF creation solution, providing the power of PDF creation to every desktop. Foxit Reader comes equipped with comprehensive protection against security vulnerabilities, keeping your system and company safe.

VLC is a free and open source cross-platform multimedia player and framework. Owned by the non-profit organization VideoLAN.

Code combines the streamlined UI of a modern editor with rich code assistance and navigation, and an integrated debugging experience – without the need for a full IDE.

Source Insight is an advanced code editor and browser with built-in analysis for C/C++, C#, and Java programs.

Source Insight parses your source code and maintains its own database of symbolic information dynamically while you work, and presents useful contextual information to you automatically. Not only is Source Insight a great program editor, but it also can display reference trees, class inheritance diagrams, and call trees. Source Insight features the quickest navigation of source code and source information of any programming editor.

Always Up-To-Date Symbol Definition Information
Call Graphs and Class Tree Diagrams
Context Sensitive Dynamic Type Resolution
Symbol Windows For Each File
Automatic Display of Declarations in the Context Window
Syntax Formatting - Like Syntax Coloring but More
Context-Sensitive Smart Rename
Finds References Quickly
Mixed Language Editing
Keyword Searches Like an Internet Search on Your Code Base
Symbolic Auto-Completion
Quick Access to All Symbols and Files
Project Orientation
Team Programming Support
Links Source code with Compiler Errors
Fast Project-Wide Search and Replace
Project Window with Multiple Views
Integrates with External Compilers and Tools
Clip Window for Storing Clipboards and Boiler Plate Code
Two-Stage Line Revision Marks and Selective Line Restoration
Extensible Document Types and Languages
Crash Recovery Offers Full-Time Protection
Persistent Workspaces
Customizable Menus and Keyboard
Windows 10/8/7/Vista/XP/2000 Support
Special Support for Remote Terminal Server Sessions
User Interface with Docking and Floating Windows
Full Featured Editor
Drag and Drop Editing of Symbols
Real World Tested
Speedy and Convenient

Get to your files from anywhere, on any device, with Microsoft OneDrive. Share and work together with anyone in your work and life.

Anki is a program which makes remembering things easy. Because it is a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.

Anyone who needs to remember things in their daily life can benefit from Anki. Since it is content-agnostic and supports images, audio, videos and scientific markup (via LaTeX), the possibilities are endless. For example:

learning a language
studying for medical and law exams
memorizing people's names and faces
brushing up on geography
mastering long poems
even practicing guitar chords!