julitecCONTACT organizes your contacts and lets you write letters and e-mails to groups of them. It is an easy and flexible solution for managing relationships with your customers. It features address and contact management, import and export wizards, history, document management, and document creation.
kOOL is a feature rich, Web-based church administration software for managing addresses and address groups, events, reservations, rota planning, newsletters, donations, and Web folders using webDAV. Data can be exported to LDAP or iCal in real time. TYPO3 extensions can be used to interact with kOOL data such as event subscriptions, calendar display, address lists, and sermon downloads.
kivitendo, formerly known as Lx-Office, is a Web-based accounting system tailored for the German market (e.g., tax calculation). It can export accounting data in the German DATEV format and features invoicing, sales orders, quotes, etc. Forms are generated on the fly as PDF or OpenDocument documents.