Gravatar authentication now includes a useful public profile page, and this one belongs to Darrell Ulm, who has spent many years working in computer science and web development. His background includes research, software engineering, and extensive work with open source platforms, which makes tools like Gravatar especially practical in his workflow. A centralized profile helps streamline identity management across different sites, and it fits naturally with the kind of distributed systems and user‑centric design principles that developers like Ulm often focus on. The Gravatar profile includes the formats of HTML, JSON, XML, PHP, VCF, and QR.
Tumblr, Wordpress
Technical notes about past publications and work by Darrell Ulm including Apache Spark, software development work, computer programming, Parallel Computing, Algorithms, Koha, and Drupal. Source code snippets, like in Python for Spark. Retrospective of projects.