Sleek Logos is described as 'has hundreds of it industry logotypes simplified for icon size format. They come in various styles to match your design: grayscale, color, outline, or filled'. There are more than 50 alternatives to Sleek Logos, not only websites but also apps for a variety of platforms, including Windows, Self-Hosted solutions, Mac and Linux. The best alternative is Font Awesome, which is both free and Open Source. Other great sites and apps similar to Sleek Logos are Flaticon (Freemium), Iconfinder (Free), Fontello (Free, Open Source) and Icons8 (Freemium).
Font2web converts any .ttf (TrueType Font) or .otf (OpenType Font) file to .ttf, .otf, .eot, .woff and .svg files. It also creates a CSS file and a demo HTML file to show you how to use webfonts on your website - using CSS @font-face.
TW Fonts is vectorized font icon library for use with your website or app. Simply link to our stylesheet and enjoy using any or all of our icons! Categories include web application, brands, holiday, sports, and more!.
Iconoir is one of the biggest open source libraries with currently 914 SVG Icons. No premium icons, no email sign-up, no newsletters. You can download any icon of the pack directly from https://iconoir.com or get them from the repository.