This task can be performed using ListMySaaS
150+ SaaS Directories and Launch Platforms to list a SaaS
Best product for this task

ListMySaaS
marketing
Then check listmysaas.com - A list of 150 places to launch your saas and get the first 1000 users The list contains - SaaS Listing directories - Launch Platforms - Maker communities - Beta places - Websites that have traffic of more than 1M - Websites that have DA of more than 50

What to expect from an ideal product
- Saves time by gathering 150 proven SaaS launch platforms in one place
- Filters launch sites by traffic volume, showing only those with 1M+ visitors
- Focuses on quality by including only websites with Domain Authority over 50
- Includes niche communities where early adopters and makers hang out
- Covers different types of platforms from directories to beta testing sites