PNG SVG PSD EPS MORE
Interface
Flat
Material Design
Circle, tick, Check
Black
512x512
tick, Check, Cloud
interface, Check, done
Basicons
Check, tick, Agree
Web application UI
done, interface, Check
Education
Educational Icons
education, Approved, paper
Business
Health
Completed, homework, done
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Signs & symbols
Glyph
Bold Purple (Free Samples)
downloaded, Circle, done
MediumOrchid
other
Verification, verify, Check
Gestures
Entypo
done, Gestures, Agreement
PNG ICO ICNS MORE
Boolean
square, done
OliveDrab
16x16
Oxygen-Refit
for, followup, Letter
SteelBlue
128x128
Gnome 2.18 Icon Theme
done, Email, mail
48x48
Simplicio
done, notification
ForestGreen
BSG: Frakking Toasters
toast, food, done
256x256
Fugue
Checked, check mark, confirm
Green
Buuf
deer, the, feared
DimGray
done, put, what
Silver
Stairs, ran, ain
DarkSlateGray
Computer & hardware
Database Management
Check, network, Database
Arrows
Navigation Set - Arrows, Part One
done, Check, check circle
done, Check, square
PNG SVG MORE
Network & communications
Cloud Computing
Check, Accept, ok
UI
Round UI Buttons
ok, tick, yes