Chrome // Extensions 
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Wordpress Plugins 
Mozilla Firefox Addons 
Grammarly: Grammar Checker and Writing App
Improve your writing with Grammarly's communication assistance—including spell check, grammar check, punctuation check, and more.
Screencastify - Screen Video Recorder
The #1 screen recorder for Chrome. Capture, edit and share videos in seconds.
AliRadar Shopping Assistant
AliRadar finds similar products, shows price history and seller’s ratings.
Distill Web Monitor
Monitor webpage or feed for changes. Get SMS and email alerts on change detection.
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
Check My Links
Check My Links is a link checker that crawls through your webpage and looks for broken links.
SEO Minion
SEO Minion helps you in your daily SEO tasks such as On-Page SEO analysis, Broken Link Checking, SERP Preview and more
Secure Browsing
Prior to clicking any link, make sure that is safe. Check links and files instantly based on data from 60+ online security services.
Spell Checker for Chrome
Spell Checker extension for Chrome. It's easy to use and fast. This extension supports 12 languages for spell check.
Affirm: Buy Now, Pay Later
Pay at your own pace with Affirm’s browser extension. Get prequalified while you shop and choose a payment plan. With no fees, ever.
Schoology Plus
Schoology Plus enhances your Schoology experience with numerous interface improvements
OP.GG Extension
Automatically proceed with multi-search, champion analysis, and rune settings to make your games more comfortable.
Auto Clicker - AutoFill
AutoFill input field or auto click button or link anything anywhere.You can configure and check click speed test
File System for Windows
Access a shared folder of Windows file server (and SMB-based server) directly from the Files app.
Super Netflix
Change Netflix Video Quality, Upload Custom subtitles, Control Volume and Much More - Make You Experience on Netflix More Enjoyable.
Ban Checker for Steam
Automatically check bans of people you recently played with, your friends, and group members.
Trend Micro Check - Browser Security
Block scam website/ Adblocker/ Online Safe Surfing/ Detect Dangerous Link and Virus
IP Whois & Flags Chrome & Websites Rating
Display Website Country Flag. Website Whois - how many Visitors are visiting, Reputation Reviews, Antivirus Check, Alexa, Incognito
MultiLogin
Using websites with multiple accounts at the same time is made easy. Create an independent tab with a click of a button.
Prolific Assistant
This is an extension designed to monitor https://www.prolific.co/ for new studies and alert you when it finds them.
Features
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HTML Error Checker
Check the HTML for error. This doesn't send the source to the external. If web page behavior is not correct, you should turn off it.
Broken Link Checker
The Easiest Way to find all broken links (404 errors) on the web page. Find more! Save more!
Bookmark Checker
Bookmarks Checker. Scan favorites for broken or dead links. Delete empty, and duplicate folders.
Content Checker Reality
Content Checker is an google chrome extension that allows you to check content of any site you visit for well known content types
Pre-sending Checker for Gmail
Allows to pop up all lists easy to check whether or not any wrong addresses in TO/CC/BCC in your Gmail.
FATRANK
Google Chrome extension that checks the ranking for a particular keyword in Google and Bing for the website currently viewed.
Amazon KW Index and Rank Tracker
Free Amazon keyword ranking & indexation check tool by AMZDataStudio - The most accurate Amazon seller tool for keyword research.