- Codye
- Color Calculator
- Color Code
- Color Code Copy
- Color Code Generator
- Color Convert: Hex to UIColor
- Color Juicer
- Color Maker
- Colour Peeker
- Color Picker
- Color Picker & Library
- Color Picker - Desktop Picker
- Color Picker - Palette Manager
- Color Picker App
- Color Picker Plus
- Color Studio
- Color UI
- Color-Selector
- ColorBox
- Colourdrop: Colour Picker
- Colorimeter App
- Colorize CheckSite
- Colorlogix - Color Design Tool
- ColorQueryPro
- Colorsip
- ColorSlurp
- ColorSquid - Color Scheme Designer
- Colorwaver
- ColorWell
- ColorWiz
- Colour Dog
- Colour Kit
- Commander X16
- Comment Here
- Comment Wrapper for Xcode
- Commentator
- Compare
- CompareMerge
- CompareMerge2
- CompuBench CL Desktop Edition 1.5
- Compute – SSH and Forwarding
- Connect Browser
- ConnectKit
- Context Menu
- Context Menu Lite
- Contrasts - WCAG Colors
- Contribution Graphs for GitHub
- Contributions for GitHub
- Controllers Lite
- Convert String
- Cooler
- Copy Fast
- Copy Link to Pasteboard
- CopyImage - Image to Base64
- CopyRight
- Core Beacons
- Core Data Lab
- Core Guide For Dreamweaver
- Core Shell
- Core Tunnel
- CoreMotion Data Recorder
- Corrupted Text Reader
- CORTEX Push
- CotEditor
- Course For Pro Tools 9 Free
- Cover Connect
- CPU Check - Monitor CPU Usage
- CraftOS-PC
- Crammaze
- CrashFinder
- Credit Utilization Calculator
- CrisCond
- Crontab Creator
- CrossFTP Pro - FTP Client
- CrownSensor
- CrunchyGIF - Ezpz video to GIF
- CryptoDNS
- Cryptogram - Quote Puzzle
- CrypTool
- CSI Pro
- CSV Converter Pro
- CSV Viewer & Editor - Convert
- CSV2PLIST
- CSVEdit
- CurHereX
- Current Latency
- Cursor Position - Coordinates
- Custom Symbols
- Cyberduck
- CyTaka
- Cổng dữ liệu mở Quảng Bình
- Cổng dữ liệu mở tỉnh Thái Bình
- Cổng dữ liệu mở tỉnh Đắk Nông