What are some alternatives?
When comparing MetaTagTools.com and SiteTools.co, you can also consider the following products
MetaTagsTool.com - Meta Tag Analyzer, Simulator, & Generator
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
OpenGraphTool.com - Open Graph Checker Tool
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
OpenGraphTags - Open Graph Tag Simulator
Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.