What human-in-the-loop tools has Megagon Labs released?

Megagon Labs has released several open-source frameworks for human-AI collaboration, including MEGAnno (an annotation framework combining LLMs with human expertise), Lapras (a multi-step human-LLM collaborative annotation system with self-explanation), Tyrogue (active learning with hybrid sampling to minimize labeling costs), and FactLens (a benchmark for evaluating fine-grained fact verification).