UP 61 places. Huge leap up the list this year

Wolfram Alpha is more than a search engine. It gives you access to the world’s facts and data and calculates answers across a range of topics

Website: wolframalpha.com
Cost: Free and Premium versions
Availability: Online

Top 100 Tools for Personal & Professional Learning 2018: –
Top 100 Tools for Workplace Learning 2018: –
Top 100 Tools for Education 2018: 66

Past Overall Rankings
2017: 200   2016: 198   2015: –   2014: –   2013: –   2012: –   2011: –   2010: –   2009: –   2008: –   2007: –

Comments from some of those who selected Wolfram Alpha as one of their Top 10 Tools 

“So many great visualizations, sometimes better than Google Search.” Anon, USA

“WolframAlpha is not just all about Maths, it covers so many subjects and even though they would love us to pay for WolframAlpha pro, the free model still offers unlimited queries everyday!” Colleen Young, Primary/Secondary (K12) teacher, USA