Famoid Instagram Follower Count Checker - Famoid Instagram Follower Count Checker is a decent web-based tool that gives you the opportunity to find the exact number of followers on an IG account 24/7.
Franz - Franz is your messaging app for WhatsApp, Facebook Messenger, Slack, Gmail, Telegram and many many more.
GetInsta Live Instagram Follower Counter - GetInsta provides a full-fledged Live Instagram Follower Counter to make it easy for you to get real-time, precise, and true follower count for IG without needing to log in first.
NocoDB - The Open Source Airtable alternative
Followers Gallery Instagram Followers Counter - Followers Gallery Instagram Followers Counter ensures everyone can get accurate and up-to-date IG followers count by providing them with followers counter tool.
Budibase - What Wordpress is to websites, Budibase is to web apps. Budibase is a free and open source web app builder for creating, launching and growing web applications. Budibase eliminates repetition and dramatically reduces development time. Check it out.