What top products so much value in their free version that you always felt like buy/subscribe to it?

Use this ultimate guide to build and launch business solutions, EdTech products, an e-commerce store, or digital products. The ultimate guide to business solutions will guide you with everything you need to build smart business solutions, EdTech Products, and Online Store for your business. What top products you think provides so much value in their free version that you always felt like buy/subscribe to it? Some products provide so much feature and value with their free version that it always meets/exceeds your expectations. Here is my list of products: Canva: It packs so much in its free that despite using it for the last 3 years, I have never felt like using the paid version. Notion: Since they made unlimited storage a while ago, this is yet another product that surprises me with unique features, and it addresses most of my needs for free. What's your product?