https://www.ilovepdf.com/word_to_pdf
	https://smallpdf.com/word-to-pdf
	https://www.adobe.com/sea/acrobat/online/word-to-pdf.html
	https://www.freepdfconvert.com/word-to-pdf
	https://www.sodapdf.com/word-to-pdf/

 
	https://www.ilovepdf.com/add_pdf_page_number
	https://smallpdf.com/add-page-numbers-to-pdf
	https://tools.pdf24.org/en/add-page-numbers-to-pdf
	https://www.sodapdf.com/add-page-numbers-to-pdf/
	https://www.cleverpdf.com/pdf-page-number

 
	https://smallpdf.com/unlock-pdf/
	https://www.ilovepdf.com/unlock_pdf/
	https://www.sodapdf.com/unlock-pdf/
	https://pdf.io/unlock/
	https://www.pdf2go.com/unlock-pdf
	https://pdfbear.com/unlock-pdf

 
	https://www.reduceimages.com/
	https://www.iloveimg.com/resize-image
	https://tinypng.com/
	https://www.img2go.com/compress-image
	https://www.resizepixel.com/reduce-image-in-kb/
	https://resizeimage.net/
	https://www.ilovepdf.com/compress_pdf

 
	https://www.remove.bg/
	https://removal.ai/
	https://photoscissors.com/
	https://clippingmagic.com/
	https://www.fococlipping.com/
	https://www.photoroom.com/background-remover/

 
	https://www.tutorialspoint.com/compile_java_online.php
	https://www.jdoodle.com/online-java-compiler/
	https://www.onlinegdb.com/online_java_compiler
	https://jsfiddle.net/
	https://code.labstack.com/
	https://www.programming-hero.com/code-playground/python/index.html
	https://www.w3schools.com/html/tryit.asp?filename=tryhtml_basic
	https://nostarch.com/scratch3playground
	https://developers.google.com/blockly
	https://blockly.programming.in.th/
	https://blockly-demo.appspot.com/static/demos/code/index.html

 
	https://www.w3schools.com/sql/
	http://sqlfiddle.com/
	https://www.jdoodle.com/execute-sql-online/
	https://sqliteonline.com/
	https://www.mycompiler.io/new/sql
	https://www.db-fiddle.com/

 
	https://itsfoss.com/online-linux-terminals/
	https://bellard.org/jslinux/
	https://cocalc.com/doc/terminal.html
	https://www.masswerk.at/jsuix/index.html
	http://cb.vu/
	https://linuxcontainers.org/lxd/try-it/

 
	https://www.base64encode.net/
	https://codebeautify.org/base64-decode
	https://elmah.io/tools/base64-image-encoder/
	https://www.utilities-online.info/base64
	https://rawgit.com/MrRio/jsPDF/master/fontconverter/fontconverter.html

 
	https://codebeautify.org/sort-text-lines
	https://textmechanic.com/text-tools/basic-text-tools/sort-text-lines/
	https://www.ipvoid.com/sort-text-lines/
	https://www.textfixer.com/tools/alphabetical-order.php
	https://alphabetizer.flap.tv/

 
	https://convertio.co/png-webp/
	https://image.online-convert.com/convert-to-webp
	https://cloudconvert.com/webp-converter
	https://ezgif.com/jpg-to-webp
	https://converter.11zon.com/en/image-to-webp/

 
	https://translate.google.com/
	https://dict.longdo.com/
	https://www.reverso.net/
	https://itranslate.com/
	http://plag.grad.chula.ac.th/
	https://plagiarismdetector.net/

 
	https://www.grammarly.com/
	https://instatext.io/
	https://www.grammarcheck.net/editor/
	https://languagetool.org/
	https://www.reverso.net/spell-checker/english-spelling-grammar/

 
	https://www.000webhost.com/
	https://infinityfree.net/
	https://sites.google.com/
	https://www.awardspace.com/
	https://github.com/
	https://themeisle.com/blog/best-free-website-hosting/

 
	https://www.google.com/drive/
	https://onedrive.live.com/
	https://www.4shared.com/
	https://www.dropbox.com/
	https://www.box.com/

 
	https://docs.google.com/
	https://www.office.com/	
	https://www.huaweicloud.com/
	https://www.libreoffice.org/	
	https://www.onlyoffice.com/

 
	https://www.tci-thaijo.org/
	https://tdc.thailis.or.th/tdc/basic.php
	http://www.conferenceinthai.com/

 
	https://www.ookbee.com/
	https://bookboon.com/
	https://books.goalkicker.com/
	https://www.packtpub.com/
	https://www.scribd.com/

 
	https://shopee.co.th/
	https://www.lazada.co.th/
	https://www.oscommerce.com/
	https://woocommerce.com/

 
	https://moodle.org/
	https://classroom.google.com/
	https://www.microsoft.com/th-th/microsoft-teams	

 
	https://www.apple.com/siri/
	https://assistant.google.com/
	Smart device เช่น Microsoft hololens 2 หรือ Google Glass

 
	Social media 
	Online game - mmorpg
	https://secondlife.com/

 
	https://unsplash.com/
	https://gratisography.com/
	https://morguefile.com/
	https://pixabay.com/
	https://www.stockvault.net/
	https://www.pexels.com/
	https://picjumbo.com/
	https://pikwizard.com/
	https://www.rawpixel.com/
	https://www.reshot.com/
	http://shutterstock.com/
	https://www.istockphoto.com/
	https://www.gettyimages.com
	https://www.foleon.com/blog/best-free-business-stock-photo-websites