Planet

http://www.strategic-planet.com/

PEST

1. STEP = PEST in more positive approach.
2. PESTEL = PEST + Environmental + Legal
3. PESTELI = PESTEL + Industry analysis
4. STEEP = PEST + Ethical
5. SLEPT = PEST + Legal
6. STEEPLE = PEST + Environmental + Legal + Ethical
7. STEEPLED = STEEPLE + Demographic
8. PESTLIED = PEST + Legal + International + Environmental + Demographic
9. LONGPEST = Local + National + Global factors + PEST

EE- Environment(Natural) / Ethical Factors

https://en.wikipedia.org/wiki/PEST_analysis

Site
http://pestleanalysis.com/

Strategic
http://www.strategicmanagementinsight.com/tools/pest-pestel-analysis.html

Vs SWOT
http://creately.com/blog/diagrams/swot-analysis-vs-pest-analysis/

Tool

1. https://rapidbi.com/the-pestle-analysis-tool
2. https://www.mindtools.com/pages/article/newTMC_09.htm

Slide

http://www.slideshare.net/search/slideshow?searchfrom=header&q=PEST+analysis

Tube

https://www.youtube.com/results?search_query=PEST+analysis