Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. Let’s Encrypt is a service provided by the Internet Security Research Group (ISRG). The key principles behind Let’s Encrypt are: Free: Anyone who owns a domain name can use Let’s Encrypt to obtain a trusted certificate at zero cost. Automatic: Software running on… Read More
Rspamd is an advanced spam filtering system that allows evaluation of messages by a number of rules including regular expressions, statistical analysis and custom services such as URL black lists. Each message is analysed by rspamd and given a spam score. According to this spam score and the user’s settings rspamd recommends an action for… Read More
OPNsense is an open source firewall distribution based on FreeBSD. Typical deployments are stateful perimeter firewalls, routers, wireless access points, DHCP and DNS servers, VPN endpoints, and UTM-machines. The OPNsense project is a fork of PFSense Firewall. The OPNsense distribution can be downloaded for free and installed on computer hard disks, SSDs, Compact Flash cards… Read More
SpinRite is a computer software program for scanning magnetic data storage devices such as hard disks, recovering data from them and refreshing their surfaces. The first version was released in 1988. Version 6.0, still current as of March 2015, was released in 2004. SpinRite is run from a bootable medium (floppy disc, optical disc, bootable… Read More
Sysdig to give admins and developers unprecedented visibility into the behavior of their systems. Traditionally, system-level monitoring and troubleshooting still largely involve logging into the machine with SSH and using a plethora of dated tools with very inconsistent interfaces. And since most tools don’t offer any kind of history, you’re left struggling to reproduce the… Read More
Thin is a Ruby web server that glues together three of the best Ruby libraries in web history. 1) The Mongrel parser, the root of Mongrel speed and security. 2) The Event Machine, a network I/O library with extremely high scalability, performance and stability. 3) Rack, a minimal interface between web servers and Ruby frameworks…. Read More
Radical Image Optimization Tool (RIOT for short) is a free image optimizer that will let you to visually adjust compression parameters while keeping minimum filesize. It uses with a side by side (dual view) or single view interface to compare the original with the optimized image in real time and instantly see the resulting file… Read More
Baïkal is a CalDAV + CardDAV server based on PHP and SabreDAV. Baïkal offers ubiquitous and synchronized access to your calendars and address books over CalDAV and CardDAV protocols and implements the current IETF recommendation drafts of these industry standards for centralized calendar and address book collections and management. Baïkal Homepage
Krita Desktop is a free digital painting and illustration application. Krita Desktop offers CMYK support, HDR painting, perspective grids, dockers, filters, painting assistants, and many other features you would expect. Check out the gallery to see what other artists have done with Krita Desktop. Krita Desktop Homepage
GlusterFS is an open source, distributed file system capable of scaling to several petabytes (actually, 72 brontobytes!) and handling thousands of clients. GlusterFS clusters together storage building blocks over Infiniband RDMA or TCP/IP interconnect, aggregating disk and memory resources and managing data in a single global namespace. GlusterFS is based on a stackable user space… Read More