Gantt - Create beautiful Gantt charts
No Code Chart - Free no-code tool to create and export chart to your website
Online Gantt - A free MS Project alternative for simple gantt charts
FnordMetric - Create charts and dashboards from SQL
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Chart.js - Easy, object oriented client side graphs for designers and developers.