The original Lightweight Software Pack was our first attempt at a curated application set for machines with limited RAM and ageing processors. It has been one of the most visited pages on the site, which means it is time for an honest update. Software evolves, RAM requirements creep upward, and some applications that were lightweight in 2024 are not lightweight in 2026.
This 2026 edition revisits every category. We re-tested all recommendations on current versions, measured RAM usage on real hardware with 2 GB and 4 GB configurations, dropped applications that no longer justify their inclusion, and added a few that have earned their place. The goal remains the same: a working software set that lets you browse the web, edit documents, play media, and maintain the system without consuming all available resources. For the full download collection, visit the Downloads hub.
What Changed from the Previous Edition
The 2026 edition is not a complete overhaul - most of the original picks remain because they are still the best options. The changes are targeted:
Dropped: Midori browser
Midori's WebKitGTK backend has fallen further behind on modern web standards. Too many sites render incorrectly or refuse to load entirely. The RAM savings (80-150 MB vs 200-400 MB for Firefox) no longer justify the compatibility problems. If you need an ultra-light browser, Pale Moon and Falkon are the remaining viable options.
Added: Pale Moon
A Firefox fork that strips out Pocket, Sync overhead, and telemetry. Pale Moon uses noticeably less RAM than Firefox on the same pages and still renders most sites correctly. It lacks some modern web features (some newer CSS properties, WebRTC video calling), but for general browsing on a 2 GB machine it is the lightest viable option that handles real websites.
Added: Sumatra PDF (Windows) and updated Evince notes (Linux)
PDF reading was underrepresented in the original pack. Sumatra PDF on Windows launches instantly and uses 10-20 MB of RAM. Evince on Linux is similarly light. Both replaced the previous recommendation to use Firefox's built-in PDF viewer, which works but adds RAM to an already loaded browser process.
Added: BleachBit
A cross-platform system cleaner that removes browser caches, temporary files, and log cruft. Particularly useful on machines with 120-240 GB SSDs where space management matters. BleachBit is lightweight, straightforward, and does not install background services.
Updated: All RAM usage figures
Every RAM measurement in this edition was taken in April 2026 on current software versions running on a ThinkPad T440 with 4 GB RAM (Windows 10) and a ThinkPad T450 with 4 GB RAM (Linux Mint 22 Xfce). The numbers reflect real-world usage, not marketing claims.
Lightweight Browser Choices
The browser remains the most resource-intensive application on any machine. Choosing correctly here has more impact on daily usability than any other single decision.
Firefox with uBlock Origin (recommended for 4 GB+ machines)
Firefox with uBlock Origin is still the best balance of compatibility, security, and resource efficiency. uBlock blocks ads, trackers, and heavy scripts before they load, reducing per-tab RAM by 30-50%. Set dom.ipc.processCount to 2 in about:config to limit multi-process overhead on low-RAM machines. Disable Pocket and Sync if you do not use them.
RAM (5 tabs, uBlock active): 300-500 MB
Platform: Windows and Linux
Pale Moon (recommended for 2 GB machines)
Pale Moon is a Firefox fork focused on efficiency. It removes modern Firefox features that consume RAM (Pocket, Sync telemetry, some multi-process architecture) while maintaining compatibility with the vast majority of websites. It will not run some cutting-edge web applications, but for browsing, email, and online documents it is more than adequate. The extension ecosystem is smaller than Firefox but covers the essentials including an ad blocker.
RAM (5 tabs): 180-320 MB
Platform: Windows and Linux
Falkon (lightweight alternative)
A Qt-based browser that ships with KDE and is available standalone. Falkon uses significantly less RAM than Firefox for basic browsing and handles standard websites well. It lacks the extension ecosystem of the major browsers, which means no uBlock Origin - a meaningful downside on ad-heavy sites. Best as a secondary browser for quick lookups or specific tasks.
RAM (5 tabs): 150-280 MB
Platform: Windows and Linux
| Browser | RAM (5 tabs) | Ad Blocking | Site Compatibility | Best For |
|---|---|---|---|---|
| Firefox + uBlock | 300-500 MB | Excellent (uBlock Origin) | Full | 4 GB+ machines, daily driver |
| Pale Moon | 180-320 MB | Good (own extensions) | Most sites | 2 GB machines, basic browsing |
| Falkon | 150-280 MB | Built-in basic blocker | Standard sites | Secondary browser, quick tasks |
| Chrome (for comparison) | 600-900 MB | No built-in, Manifest V3 limits | Full | Not recommended for ≤4 GB |
Office, PDF, and Document Tools
LibreOffice (4 GB+ machines)
LibreOffice remains the standard for full office functionality on older hardware. Writer, Calc, and Impress handle Microsoft file formats reliably. RAM usage has increased slightly in recent versions - Writer now uses 200-350 MB depending on document complexity, up from 150-300 MB in 2024. On a 4 GB machine this is manageable alongside a browser with limited tabs. On a 2 GB machine, it competes with the browser for resources.
RAM (Writer, typical document): 200-350 MB
Platform: Windows and Linux
AbiWord (2 GB machines)
AbiWord launches in seconds, uses 20-40 MB of RAM, and handles basic .doc/.docx files reliably. It lacks spreadsheet and presentation capabilities - it is a word processor only. For machines where LibreOffice Writer feels heavy, AbiWord is the practical fallback. Pair with Gnumeric if you also need spreadsheet functionality.
RAM: 20-40 MB
Platform: Linux (Windows builds exist but are outdated)
Sumatra PDF (Windows)
A minimalist PDF reader that opens instantly and uses negligible RAM. Sumatra handles PDFs, ePub, MOBI, and several comic book formats. It has no editing capability - strictly a viewer - which is exactly what most users need. No background services, no update popups, no toolbar bloat.
RAM: 10-25 MB
Platform: Windows only
Evince (Linux)
The GNOME document viewer, also available on Xfce and other desktops. Evince handles PDF, DjVu, and PostScript with minimal resource usage. It integrates well with the Linux desktop and opens faster than the PDF functionality built into browsers.
RAM: 15-30 MB
Platform: Linux
| Application | RAM | File Compatibility | Best For |
|---|---|---|---|
| LibreOffice Writer | 200-350 MB | Excellent (.doc, .docx, .odt) | 4 GB+ machines, full office needs |
| AbiWord | 20-40 MB | Good (.doc, .docx basics) | 2 GB machines, word processing only |
| Sumatra PDF | 10-25 MB | PDF, ePub, MOBI | Windows PDF viewing |
| Evince | 15-30 MB | PDF, DjVu, PostScript | Linux PDF viewing |
| MS Word (for comparison) | 300-500 MB | Native .docx | Not recommended for ≤4 GB |
Media Players
VLC
The universal media player. VLC handles every audio and video format without additional codecs. It provides a full graphical interface with playlists, equaliser, subtitle management, and network streaming. RAM usage is moderate at 80-160 MB during video playback - acceptable on machines with 4 GB, slightly heavy on 2 GB configurations. VLC uses hardware video decoding when available, which is critical for smooth 1080p playback on older processors.
RAM (video playback): 80-160 MB
Platform: Windows and Linux
mpv
A minimalist video and audio player with no graphical interface beyond the playback window. Controls are keyboard-driven. mpv uses less RAM than VLC, supports hardware decoding, and handles every common format. It is the better choice on 2 GB machines where every megabyte matters, and it is preferred by many Linux users for its scriptability and clean output. The learning curve is small - a handful of keyboard shortcuts covers daily use.
RAM (video playback): 50-90 MB
Platform: Windows and Linux
Strawberry Music Player (replaces Audacious in this edition)
A Qt-based music player forked from Clementine. Strawberry handles local music libraries with playlist management, equaliser, and album art. It uses slightly more RAM than Audacious (30-50 MB vs 15-30 MB) but provides a significantly better library management experience. For machines primarily used for music playback, the trade-off is worthwhile. Audacious remains available for users who want absolute minimum resource usage.
RAM: 30-50 MB
Platform: Windows and Linux
| Player | RAM | GUI | Best For |
|---|---|---|---|
| VLC | 80-160 MB | Full graphical | 4 GB+ machines, video and audio |
| mpv | 50-90 MB | Minimal (keyboard) | 2 GB machines, video playback |
| Strawberry | 30-50 MB | Full graphical | Music library management |
Security Tools
ClamAV
An open-source antivirus scanner available on both Windows (ClamWin frontend) and Linux. ClamAV performs on-demand scanning rather than real-time protection, which is important on low-spec machines where a background antivirus service would consume resources constantly. Run a weekly scan and pair it with safe browsing habits. On Linux, ClamAV is most useful for scanning files destined for Windows machines or shared drives.
RAM (during scan): 100-200 MB
Platform: Windows (ClamWin) and Linux
uBlock Origin
Not strictly a standalone application, but uBlock Origin is the single most impactful security and performance tool for any browser on an older machine. It blocks malicious ads, tracking scripts, cryptominers, and known malware domains before they load. The reduction in page weight directly translates to lower RAM usage and faster page rendering. Every machine in the pack should have this installed in Firefox.
RAM overhead: ~10-20 MB
Platform: Firefox extension (Windows and Linux)
Utilities and System Tools
7-Zip (Windows) / File Roller (Linux)
7-Zip handles ZIP, 7z, tar, gzip, and RAR archives with minimal resource usage. It integrates with the Windows right-click context menu for instant extraction. File Roller provides the same functionality on Linux desktops. Both are effectively invisible in terms of resource impact - they load when needed and release everything when finished.
RAM (during extraction): 10-30 MB
Platform: 7-Zip (Windows), File Roller (Linux)
BleachBit (new in 2026 edition)
A cross-platform system cleaner that removes browser caches, temporary files, log files, and other cruft that accumulates over time. Particularly valuable on machines with 120 GB SSDs where free space matters. BleachBit does not install background services or scheduled tasks - you run it when you want to reclaim space. It can typically recover 500 MB to 3 GB depending on how long since the last cleanup.
RAM: 20-40 MB
Platform: Windows and Linux
Notepad++ (Windows) / Mousepad (Linux)
Fast text editors with syntax highlighting and basic search-and-replace. Both open instantly and use negligible RAM. For editing configuration files, quick notes, and viewing log files, these are the right tools. Do not use a code editor like VS Code on a 4 GB machine - it alone uses 300-500 MB.
RAM: 5-15 MB
Platform: Notepad++ (Windows), Mousepad (Linux)
PCManFM (LXQt) / Thunar (Xfce)
Lightweight file managers that replace heavier defaults like Nautilus or Dolphin. Both support tabbed browsing, network shares, and right-click archive extraction when paired with the appropriate backend. They open instantly and consume 15-30 MB - roughly a quarter of what Nautilus uses in GNOME.
RAM: 15-30 MB
Platform: Linux
What to Avoid on 4 GB RAM Machines
Knowing what not to install is as important as knowing what to install. These are the applications we see most frequently causing problems on low-spec hardware:
Google Chrome
Chrome uses 600-900 MB with five tabs open - more than half the available RAM on a 4 GB machine before you open anything else. Manifest V3 has reduced the effectiveness of ad blockers, meaning pages load heavier. Chrome is designed for machines with 8-16 GB of RAM. On a 4 GB machine, it creates constant swap pressure that makes everything slower.
Microsoft Office (installed version)
Word alone uses 300-500 MB. Excel with a modest spreadsheet uses 250-400 MB. Outlook sits at 200-350 MB in the background. Running any two Office applications alongside a browser on a 4 GB machine pushes the system into heavy swap usage. LibreOffice is lighter and free.
Real-time antivirus suites
Norton, McAfee, Avast, and similar products consume 200-500 MB of RAM and significant CPU resources continuously. On a 4 GB machine, this is the difference between a responsive system and one that hesitates on every click. Use ClamAV for on-demand scanning and uBlock Origin for browser protection instead.
Electron-based applications
VS Code, Slack, Discord, Teams, and Spotify desktop are all Electron applications - each one is essentially a separate Chrome instance. A single Electron app uses 200-400 MB. Two of them alongside a browser will consume all 4 GB. If you need messaging, use the web interface through your lightweight browser instead of the desktop client.
For the benchmark data behind these RAM figures, our 4 GB RAM reality test documents exactly how memory is consumed under realistic workloads.
Installation Notes and Caveats
Windows install notes
- Download all installers from official sources only. Firefox from mozilla.org, LibreOffice from libreoffice.org, VLC from videolan.org. Third-party download sites frequently bundle adware.
- Use the "Custom" or "Advanced" installation option for every application. Uncheck any bundled toolbars, browser changes, or "recommended" additional software.
- After installing all applications, run BleachBit once to clear the installer temporary files. This recovers 200-500 MB immediately.
- Set Firefox with uBlock Origin as the default browser. Remove Microsoft Edge from startup if you do not use it - Edge runs background processes that consume 100-200 MB even when you are not using it.
Linux install notes
- Most of these applications are available through your distribution's package manager. On Linux Mint or Xubuntu:
sudo apt install firefox vlc mpv bleachbit libreoffice-writer libreoffice-calc evince 7zipcovers the essentials in one command. - Firefox on Linux uses Wayland by default on some distributions, which can increase memory usage. If you are on Xfce or LXDE (X11), this is not a concern.
- Pale Moon is not in most distribution repositories. Install from the official site (palemoon.org) following their Linux instructions.
- AbiWord and Gnumeric are in most repositories but may pull in GNOME dependencies. Install size is small regardless.
Tips specifically for 4 GB machines
- Limit browser tabs to 5 or fewer. Each additional tab adds 30-80 MB depending on page complexity.
- Close the browser before opening LibreOffice for large documents, and vice versa. The swap overhead of running both simultaneously is what makes the system feel slow.
- Use mpv instead of VLC for video playback - the 30-70 MB saving matters when headroom is tight.
- On Linux, use Xfce or LXQt rather than GNOME or KDE Plasma. The desktop environment difference is 300-500 MB of RAM - as much as the browser itself. Our lightweight Linux guide covers distribution and desktop selection in detail.
- Disable browser session restore if you tend to accumulate tabs. A fresh start uses less RAM than restoring 15 tabs from the previous session.