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Xin Li
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Home Energy Calculators
Free Solar, EV & Home Energy Calculators
Oct 2026
PsychologyTests.org
Psychological tests and screening tools
Oct 2026
The Citation Generator
Free APA, MLA, Chicago & Harvard Citation Generator
May 2026
Global Emergency Numbers
Emergency numbers, anywhere in the world
May 2026
Cigar Directory
Comprehensive guide to premium cigars from around the world
Apr 2026
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Xin Li
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1mo ago
PsychologyTests.org - Psychological tests and screening tools
Free browser-based psychological screening tools with multilingual support and private local scoring.
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Xin Li
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1mo ago
Home Energy Calculators - Free Solar, EV & Home Energy Calculators
Use free home energy calculators for solar panels, EV charging time, battery backup, generator sizing, solar payback, net metering, heat pump vs gas costs, and more.
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Xin Li
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6mo ago
The Citation Generator - Free APA, MLA, Chicago & Harvard Citation Generator
Free citation generator. Enter a DOI to instantly create accurate APA, MLA, Chicago, or Harvard citations.
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