The NLUUG is the association of (professional) users of UNIX/Linux, Open Source, Open Systems and Open Standards in the Netherlands. The NLUUG organises two large conferences every year. The spring conference 2025 will be held Thursday the 22nd of May 2025 in the Van der Valk Hotel Utrecht. The Programme Committee is seeking contributions from the community. For our conferences we like the following subjects (and more): Automation, Content Management Systems (CMS), Configuration management, Cryptography and crypto analysis, Databases, Home automation, Information security, Internet (standards, technical aspects), Interesting events and history, Network (analyse, firewalls), Open source, Open standards, Operating systems, Programming languages, Privacy, Software development, Tools, Web technology, and more... This list is just an indication. A default speaker slot is 45 minutes. This includes the time to answer questions. Speakers will receive the following benefits: * Free access to our conference * Lunch, coffee/tea/beverages * Invitation to join our speakers dinner Talks may be in English, but also in Dutch. If you have a good topic, don't hesitate to submit a proposal on https://cfp.nluug.nl/nluug-voorjaarsconferentie-2025/ Proposals can be submitted until the 13th of March 2025 23:59 CET. Willem Toorop on behalf of the NLUUG programme committee