PyF is a python open source framework and platform dedicated to large data processing, mining, transforming, reporting and more.
PyGoWave is the next generation communication platform for the web coded in Python. It is similar to its big brother Google Wave and aims to be a comparable and compatible alternative.
KeepNote is a note taking application that works on Windows, Linux, and MacOS X. With KeepNote, you can store your class notes, TODO lists, research notes, journal entries, paper outlines, etc in a simple notebook hierarchy with rich-text formatting, images, and more.
metasearch engine, aggregating the results of other search engines while not storing information about its users.
del.icio.us/scuttle in python
VisiData is an open-source multitool for interacting with tabular data from within the terminal. It's great for investigative journalists, data scientists, unix command-line users, and anyone else who wants to quickly look at or manipulate data.
Open source data visualization and analysis for novice and experts. Data mining through visual programming or Python scripting. Components for machine learning. Extensions for bioinformatics and text mining. Packed with features for data analytics.
dvcs-autosync is a project to create an open source replacement for Dropbox/Wuala/Box.net/etc. based on distributed version control systems (DVCS). It offers nearly instantaneous mutual updates when a file is added or changed on one side but with the added benefit of (local, distributed) versioning and that it does not rely on a centralized service provider, but can be used with any DVCS hosting option including a completely separate server - your data remains your own.
Safebook is an online social network that is specifically designed to prevent privacy violations by intruders, malicious users and/or even by OSN providers. Safebook is mainly characterized by a Peer-to-peer based decentralized architecture whereby basic security and privacy problems as well as the lack of a priori trust and incentives are addressed by leveraging on real-life trust between users, such that services like data storage or profile data routing are performed by peers who trust one another in the social network. The Safebook project was proposed by the Networking and Security Department in Eurecom and was funded by the Socialnets research project funded by the European Commission under the Information Society Technology.
