PrepostSEO Guest Posting - Daily Updated (10-30 sites added daily)- Publish Guest Posts at high authority guest posting sites (blogs). All premium websites listed.

Promotehour - Free list of 1100+ media outlets to pitch your startup

Adsy - Adsy is a guest posting service offering advantages for publisher and buyers. Only quality sites DA40+

Submit Juice - Free and curated list of startup directories to promote your new startup. We manually post your startup to more than 150+ relevant directories and blogs to help your startup get discovered.

PrePostSEO Domain Authority Checker - DA PA Checker (Domain Authority Checker) is developed to check bulk DA PA with spam score & IP Address for up to 500 URLs at once.

pressfarm - Pressfarm helps entrepreneurs find journalists to write about their startups.