These are 8 Chrome extensions that I find to be very helpful.
Check spelling, style, and grammar in your browser
KB SSL Enforcer – Version: 1.0.19 Automatic security, browse encrypted.
Keep My Opt-Outs – Version: 1.0.10
Permanently opts your browser out of online ad personalization via cookies
Proxy Switchy! – Manage and switch between multiple proxies quickly and easily.
RSS Subscription Extension (by Google) – Version: 2.1.3
Adds one-click subscription to your toolbar.
Web of Trust is a safe browsing tool, which warns you about risky sites that cheat customers, deliver malware or send spam.