Based on our record, pretix should be more popular than Teamflow. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
• teamflowhq.com - can do an event with up to 10 people for free, very professionally designed. Source: almost 3 years ago
What about something like Pretix. I personally haven't tried it. Source: almost 2 years ago
You may want to try pretix: https://pretix.eu/about/en/, the corresponding GitHub: https://github.com/pretix/pretix . Source: over 2 years ago
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