Off-the-Record (OTR) Messaging allows you to have private conversations over instant messaging by providing encryption, authentication, deniability, and perfect forward secrecy. If you lose control of your private keys, no previous conversation is compromised. 

Off-the-Record Messaging Provides Private Conversations Over IM

Mosquitto is an open source message broker that implements the MQ Telemetry Transport protocol version 3.1. MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for machine to machine messaging such as with low power sensors or mobile devices such as phones, embedded computers or microcontrollers like the Arduino.

Mosquitto - An Open Source MQTT v3.1 Broker

PLD is a free, RPM-based Linux distribution, aimed at the more advanced users and administrators, who accept the tradeoffs of using a system, that might require manual tweaking in exchange for much flexibility. PLD kernels are build using modules. You are free to pick which modules to load depending on hardware you want to use. It supports Easy package management, Multiple desktop environments and lot more.

PLD - PLD Linux Distribution

ScanSSH supports scanning a list of addresses and networks for open proxies, SSH protocol servers, Web and SMTP servers. Where possible ScanSSH, displays the version number of the running services. ScanSSH protocol scanner supports random selection of IP addresses from large network ranges and is useful for gathering statistics on the deployment of SSH protocol servers in a company or the Internet as whole. 

ScanSSH -  Scans the network for open proxies

Port of the most important GNU utilities to Windows

UnxUtils - GNU utilities for Win32

NX is an exciting new technology for remote display. It provides near local speed application responsiveness over high latency, low bandwidth links. The core libraries for NX are provided by NoMachine under the GPL. FreeNX is a GPL implementation of the NX Server and NX Client Components. 

Free NX -  Next Generation Remote Display 

build2 is an open source (MIT), cross-platform toolchain for building and packaging C++ code. It includes the build system (build2), package manager (bpkg), and repository web interface (brep). 

Build2 - C++ Build Toolchain

Postgres-XL is a horizontally scalable open source SQL database cluster, flexible enough to handle varying database workloads like OLTP, Business Intelligence requiring MPP parallelism, Key value store, GIS Geospatial and lot more.

Postgres-XL - Scalable Open Source PostgreSQL-based Database Cluster

Taler is a new electronic payment system. When you pay with Taler, your identity does not have to be revealed to the merchant. The bank, government and exchange will also never learn how you spent your electronic money. However, you can prove that you paid in court if necessary.
 
Taler uses an electronic exchange holding financial reserves in existing currencies. This means that Taler is not a new currency with the inherent currency fluctuation risks, but instead the cryptographic coins correspond to existing currencies, such as US Dollars, Euros or even BitCoins.

Taler is a new electronic payment system. When you pay with Taler, your identity does not have to be revealed to the merchant. The bank, government and exchange will also never learn how you spent your electronic money. However, you can prove that you paid in court if necessary.

Taler - Electronic payments for a liberal society

netsniff-ng is a free Linux networking toolkit, a Swiss army knife for your daily Linux network plumbing if you will. Its gain of performance is reached by zero-copy mechanisms, so that on packet reception and transmission the kernel does not need to copy packets from kernel space to user space and vice versa. 
 
 netsniff-ng is a fast network analyzer based on packet mmap(2) mechanisms. It can record pcap files to disc, replay them and also do an offline and online analysis. Capturing, analysis or replay of raw 802.11 frames are supported as well. pcap files are also compatible with tcpdump or Wireshark traces. netsniff-ng processes those pcap traces either in scatter-gather I/O or by mmap(2) I/O.

 netsniff-ng is a free Linux networking toolkit, a Swiss army knife for your daily Linux network plumbing if you will. Its gain of performance is reached by zero-copy mechanisms, so that on packet reception and transmission the kernel does not need to copy packets from kernel space to user space and vice versa. 

netsniff-ng - The packet sniffing beast

PeerVPN is a software that builds virtual ethernet networks between multiple computers. Such a virtual network can be useful to facilitate direct communication that applications like file sharing or gaming may need. Often, such direct communication is made impossible or very difficult by firewalls or NAT devices.
 
Most traditional VPN solutions follow the client-server principle, which means that all participating nodes connect to a central server. This creates a star topology, which has some disadvantages. The central node needs lots of bandwith, because it needs to handle all the VPN traffic. Also, if the central node goes down, the whole VPN is down too. A virtual network built by PeerVPN uses a full mesh topology. All nodes talk directly to each other, there is no need for a central server. If one node goes down, the rest of the network is unaffected.

PeerVPN is a software that builds virtual ethernet networks between multiple computers. Such a virtual network can be useful to facilitate direct communication that applications like file sharing or gaming may need. Often, such direct communication is made impossible or very difficult by firewalls or NAT devices.

PeerVPN - the open source peer-to-peer VPN

 SpatiaLite is an open source library intended to extend the SQLite core to support fully fledged Spatial SQL capabilities. SQLite is intrinsically simple and lightweight, It is a single lightweight library implementing the full SQL engine. SpatiaLite is smoothly integrated into SQLite to provide a complete and powerful Spatial DBMS (mostly OGC-SFS compliant). Using SQLite + SpatiaLite you can effectively deploy an alternative open source Spatial DBMS roughly equivalent to PostgreSQL + PostGIS. 

SpatiaLite - Spatial SQL

wrk2 is wrk modifed to produce a constant throughput load, and accurate latency details to the high 9s (i.e. can produce accurate 99.9999%'ile when run long enough). In addition to wrk's arguments, wrk2 takes a throughput argument (in total requests per second) via either the --rate or -R parameters (default is 1000).

wrk2 - A constant throughput, correct latency recording variant of wrk

twemproxy (pronounced "two-em-proxy"), aka nutcracker is a fast and lightweight proxy for memcached and redis protocol. It was built primarily to reduce the number of connections to the caching servers on the backend. This, together with protocol pipelining and sharding enables you to horizontally scale your distributed caching architecture.

twitter-twemproxy

Sparkey is a simple constant key/value storage library. It is mostly suited for read heavy systems with infrequent large bulk inserts. It includes both a C library for working with sparkey index and log files (libsparkey), and a command line utility for getting info about and reading values from a sparkey index/log (sparkey).

Sparkey - Simple constant key/value storage library, for read-heavy systems with infrequent large bulk inserts.


Discover open source projects across all platforms

Projects