SepPDF is a tiny PDF file splitter with drag-and-drop support.
Google Chrome is a web browser designed for simplicity and speed. Its minimalistic appearance and capabilities can be extended with themes and extensions. The program integrates with Google’s tools and services, and can sync across other signed-in devices.
Cross-platform with clients available for Mac, Linux, Android and iOS.
Google Chrome Portable is the PortableApps version of the program. It includes automatic support for jPortable to enable web-based Java apps. For users interested in the cutting edge, Beta and Development are also available. For Windows versions from XP to 8, see past versions.
Note: Starting in v125, Chrome silently stopped supporting portable versions, which noticeably stopped supporting portable printing (including saving as PDF). Starting in v126, Chrome Portable bypasses it by hardcoding the command line parameter –disable-features=PrintCompositorLPAC (see the disable-features command line).
Process Monitor displays both file system and registry activities in real-time, combining the features of FileMon and RegMon. Additional features includes live changes (autoscroll), non-destructive filtering, comprehensive event properties such session IDs and user names, reliable process information, full thread stacks with integrated symbol support for each operation, file logging etc.
Alternatively, Process Monitor Portable is also available, which is stealth.
FocusWriter is a full-screen word processor that aims for a distraction-free, immersive way to write and edit. The minimalist interface puts options and tools on the edge of the screen and auto-saves progress. Upon relaunch, the program reloads your last file to make make it easy to jump back into your work.
Alternatively, FocusWriter Portable is stealth and automatically adjusts paths.
CudaText is a code editor with a clean, tabbed interface and side-panels. Includes split view, code folding, hotkeys, theme support, color picker and much more. The program supports 300+ syntaxes and add-ons written in Python, as well as some IDE features if plugins are used.
The program is cross-platform, with clients available for Mac and Linux. Settings are modified either via options dialogs, or alternatively, by manually editing text config files (JSON format).
EmEditor is a tabbed text editor with themes, syntax highlighting, stay-on-top and customizable keyboard mapping. The program supports batch find-and-replace, regular expressions and more.
Vivaldi is a customizable, tabbed web browser based on the same engine as Google Chrome. Its appearance and capabilities can be extended with themes and extensions. It features a bookmark manager, speed dial, notes, custom search engines, sessions, tab stacks, web panels, mouse gestures, keyboard shortcuts, user interface scaling, adaptive interface color and much more.
Cross-platform with clients available for Mac and Linux.
Mozilla Thunderbird is a skinnable, feature-rich email, calendar, task and instant messaging client with support for plugins and many protocols. It comes with advanced search tools, message filtering, Bayesian spam detector, built-in spell checker, mailbox compression and many more. Program features can be extended with add-ons, including a specialized version of email encryption tool GPG.
Email protocols include SMTP, POP3, IMAP (including uploads, albeit a date issue), NNTP and RSS and chat support for IRC, Twitter, XMPP, Google Talk, and Matrix. Also supports OAuth for use with accounts that require it instead of a password.
Mozilla Thunderbird, Portable Edition is a special build licensed by Mozilla. Alternatively, X-Thunderbird is also available. For XP/Vista, version 52.9.1 is available here.
7-Zip is an archive manager that can view and create a wide variety of formats. The program includes folder favorites, optional two-pane view, checksum calculator, file split/combine capability and more. Individual archives can be created with high speed or high compression settings, update options (including update, add/replace, synchronize), split volumes and more. Archives can be secured with standard zip or more secure AES encryption.
Although the official archiver for the open, high-compression “7z” format, the program also supports the creation of multiple formats including ZIP, XZ, BZIP2, GZIP, TAR and WIM. It will extract a long list of other formats, among them RAR, CAB, ISO, ARJ, RPM, VHD, VMDK etc. Even more formats are supported through third-party plugins. Supports many world languages.
Additionally, to use alternative toolbar and file icons, 7-Zip Theme Manager is available.
7-Zip Portable is a wrapper from PortableApps.com, auto-detecting 32 or 64-bit automatically. Alternatively, X-7zip is also available.
There is also a 7-Zip standalone console version.
DiskGenius is full-featured partition manager, which is designed to optimize disk usage for Windows users. It allows you to resize, extend, split, create, delete, format, hide, copy and erase partition to maximize disk space use.
DiskGenius is a complete disk & partition solution for Windows PCs that helps managing storage space for higher efficiency.
There is also a Lite version available that only features the partition manager. Find the links in the comments or in the associated forum thread.