Free and Open Source Software

posted by Rianne Schestowitz on Nov 15, 2025

• rate-mirrors - client-side map-aware mirror ranking tool - LinuxLinks

  rate-mirrors uses info about submarine cables and internet exchanges (kudos to TeleGeography for data) to jump between countries and find fast mirrors. And it’s fast enough to run it before each system update (~30 seconds with default options).

  This is free software.

• Open Alert Viewer - fetch and display server alerts - LinuxLinks

  Open Alert Viewer displays server and network alerts from servers running Prometheus, Nagios, Icinga or Zabbix.

  Prometheus v0.16.0+, Nagios Core 4.x and Icinga 2.12.0+ are supported with Basic Authentication; partial support, and default authentication for Zabbix 6.x and 7.x.

  This is free and open source software which runs under Linux and Android.

• Sendworm - send files securely - LinuxLinks

  Sendworm lets you send files securely using Magic Wormhole.

  This is a cross-platform desktop app for sending files quickly and securely using the magic-wormhole protocol, which makes it compatible with other tools that use magic-wormhole.

  This is free and open source software.

• 6 Useful Free and Open Source Wake-on-LAN Tools - LinuxLinks

  This functionality is very useful to access a computer remotely without needing to physically turn it on first. The computer’s network card must support the feature, and it needs to be enabled in the system’s BIOS/UEFI settings.

  WOL is based on the following principle: When the PC shuts down, the NIC still gets power, and keeps listening on the network for a ‘magic’ packet to arrive. This packet must contain a certain byte-sequence, but can be encapsulated in any kind of packet (IPX, IP, anything).

  This article picks some useful Wake-on-LAN tools for Linux.

  Here’s our verdict captured in a legendary LinuxLinks-style ratings chart. Only free and open source software is eligible for inclusion here.

• mstat - measure memory usage of a program over time - LinuxLinks

  Additionally, the Memory API we are using not only gives us detailed information about userspace memory usage, but also about kernel memory allocated on behalf of the program. (such as memory used to mange a process’s page tables).

  This is free and open source software.

• Pictures Converter - convert image formats - LinuxLinks

  In the settings function, users can choose whether images are always saved in the “Pictures/Converted” directory, the original directory from which they came (note that the Flatpak version requires elevated permissions for this), or if the program should always prompt for the desired save location.

  This is free and open source software.