收集了一些常见的图标，包括各种样式，拟物、象形、扁平化、黑白、多彩等，一共100组，均包括图标文件的免费下载。

Doodle Icons

doodle icons
Creator: Ramy Wafaa
License: Declared as Free, no proper license given.

60 Vicons – Free Icon Set

vicons
Creator: Victor Erixon
License: License included in the file.

Simple Flags- Free PSD

flags icons
Creator: Kit Logan
License: Declared as Free, no proper license given.

File Types Icons Set

types icons
Creator: Oliver
License: Declared as Free, no proper license given.

Punjab Icons (Free)

punjab icons
Creator: Abhimanyu Rana
License: Declared as Free, no proper license given.

Outline Vehicle Icons

vehicle icons
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Rounded Icons Free

rounded icons set
Creator: Mohammed Omidvar
License: Declared as Free, no proper license given.

Vibrant Flat Icons

vibrant flat icons
Creator: roundicons
License: Declared as Free, no proper license given.

Vector Icons

outline icons
Creator: roundicons
License: Declared as Free, no proper license given.

100 Flat Long Shadow Icons Vol. 2

100 free flat icons
Creator: graphicloads
License: Declared as Free, no proper license given.

Slim Icons

slim icons
Creator: graphicloads
License: Declared as Free, no proper license given.

100 Sport & Fitness Icons

sports icons
Creator: graphicloads
License: Declared as Free, no proper license given.

Retro Vehicles

retro vehicles
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Web Design Icon Set

web design icon set
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Free Set of Flat Female Super Heroes Busts

super heros
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Free Sweets/Desserts Icon Set

free sweets
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Free Tools Icon Set

tools set
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Free Cutlery Icon Set

cutlery icons set
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Free Zombie-Survival-Kit Icons

survival kit icons
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Pleasantly Tiny Icons

tiny icons
Creator: Denise Chandler
License: Declared as Free, no proper license given.

Ballicons 2 Vol. 2 Free Version (PSD, SVG, PNG)

circular icons
Creator: PixelBuddha
License: CC BY 3.0.

Travel and Ecology Icon Set (AI, SVG, PSD, PNG)

travel icons
Creator: round icons
License: CC BY 3.0.

Helium Icon Set (AI, EPS, SVG, Icon Font)

hellium icons
Creator: Taras Shypka
License: CC BY 3.0.

Jellycons iOS 8 App Icon Set (PNG, Sketch)

jellycons
Creator: LoveUI.co
License: Declared as Free, no proper license given.

Flat Food Icons

food icons
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Flat Weather Icons

weather icons
Creator: Dimitrios Pantazis
License: Declared as Free, no proper license given.

Essential Generic Icons

generic icons
Creator: cssauthor
License: Declared as Free, no proper license given.

200 Minimal Outline Icons for Web & Mobile App Design

line icons
Creator: cssauthor
License: Declared as Free, no proper license given.

Beautiful Flat style Icon Set (EPS,AI,PSD,PNG)

flat icons
Creator: cssauthor
License: Declared as Free, no proper license given.

Line Icons – V2

line icons 2
Creator: cssauthor
License: Declared as Free, no proper license given.

Free Social Media Line Icon Set

social media icons line style
Creator: cssauthor
License: Declared as Free, no proper license given.

File Type Icons

file type icons 2
Creator: psdbooster
License: Declared as Free, no proper license given.

100 Stroke Icons

stroke icons
Creator: graphicloads
License: Declared as Free, no proper license given.

20 Free Flat Long Shadow Media Icons

flat icons 2
Creator: graphicloads
License: Declared as Free, no proper license given.

30 Folded iOS7 Icons

folded icons
Creator: graphicloads
License: Declared as Free, no proper license given.

Free Wireframe Icons

line style icons
Creator: sm-artists
License: Free for personal and commercial use.

Gamecenter Icons Pack

gamecenter icons
Creator: Alexey Anatolievich
License: Declared as Free, no proper license given.

54 Free E-commerce Icons

ecommerce icons
Creator: Virgil Pana
License: Declared as Free, no proper license given.

56 Free Practicons (AI+ PNG + SVG)

colorful icons
Creator: James George
License: Declared as Free, no proper license given.

Web Design Icons

web design icons
Creator: daniel mcleay
License: Declared as Free, no proper license given.

Lined Icons

lined icons
Creator: buatoom
License: Declared as Free, no proper license given.

Flat Icons With Long Shadows

flat icons with long shadow
Creator: AMR EMAM
License: Attribution Non-commercial.

GIF Social Media Icons

gif social media
Creator: AMR EMAM
License: Attribution Non-commercial.

Free Social Icons Collection 24 Style

social media huge pack
Creator: AMR EMAM
License: Attribution Non-commercial.

70 Free Octicons (AI + PNG + SVG)

octicons
Creator: James George
License: Declared as Free, no proper license given.

Vector Foldicons (70 Icons AI + PNG + SVG)

foldicons
Creator: James George
License: Declared as Free, no proper license given.

Web Interface Icons (PNG + SVG)

100 web icons
Creator: James George
License: Declared as Free, no proper license given.

Hexagonal Outline Icons (AI + PNG + SVG)

hexagons
Creator: James George
License: Declared as Free, no proper license given.

Set of Colorful Flat Icons with Shadow

white social media icons
Creator: land-of-web
License: Free for personal and commercial use.

40 Free Stitched Social Media Tag Icons

stitched social media icons
Creator: Rohan Kapoor
License: Attribution Non-commercial.

30 Foods Icons-Free Icon Set

food icons 2
Creator: zeuero
License: Declared as Free, no proper license given.

Free Icons

outline icons2
Creator: Claire Paoletti
License: Declared as Free, no proper license given.

Aves Icon Set (Free AI + PSD)

minimalist icons
Creator: Erigon
License: Free for personal and commercial use.

Map Flat Icon

map icons
Creator: Unique Graph
License: Attribution.

40 Free E-commerce Icons Set (AI + PNG)

ecommerce icons 2
Creator: Ess Kay
License: Attribution Non-commercial.

Flat Long Shadow Icons

colorful flat icons
Creator: Ess Kay
License: Attribution Non-commercial.

20+ Simple Line Icons

contour icons
Creator: Given
License: Declared as Free, no proper license given.

40 Food Icons

food icons set
Creator: graphicsbay
License: CC BY.

Hawcons

hawkons
Creator: Yannick Lung
License: Declared as Free, no proper license given.

Line Icons Set 2 Proces

line icons set 2
Creator: Sander Legrand
License: Declared as Free, no proper license given.

Free Medical Icons

medical icons
Creator: Ahmed Barakat
License: Attribution Non-commercial No Derivatives.

Musicons – Free PSD Music Icons

musicons
Creator: Mantas Sutkus
License: Declared as Free, no proper license given.

Dashel Icon Set (45 Icons, SVG, PSD, PNG)

web icon set
Creator: Print Express
License: Creative Commons.

Tourism & Travel Icon Set (100 Icons, PNG, SVG)

travel icons set
Creator: Freepik
License: Free for personal and commercial use.

Responsive and Mobile Icon Set (100 Icons, PNG, PSD)

responsive icon set
Creator: Iconshock and Designshock
License: Creative Commons Attribution 3.0 Unported.

Free Hand-drawn Doodle Icon Set (100 Icons, PNG, PSD, SVG)

doodle icons set
Creator: Roundicons
License: Free for personal and commercial use.

Boldons Icon Set (45 Icons, PNG, AI)

bold icons
Creator: SmashingMagazine
License: Creative Commons Attribution 3.0 Unported.

Touristic Icons (100 Icons, PNG, SVG)

tourist icons
Creator: Freepik
License: Creative Commons Attribution 3.0 Unported.

Icons Of Autumn (50 Icons, EPS)

autumn icons
Creator: Nick Botner
License: Creative Commons.

Ballicons 2 Icon Set (PNG, PSD, SVG)

ballicons
Creator: PixelBuddha
License: Free for personal and commercial use.

Summer and Essentials Icon Set (50 Icons, EPS, AI, PNG)

summer set
Creator: Elena Genova
License: Free for personal and commercial use.

Flat Icon Set (60 Icons, PNG, SVG, EPS, PSD, AI)

60 flat icons
Creator: Roundicons
License: Free for personal and commercial use.

100 Stroke Icons

100 stroke icons
Creator: puppetscientists
License: Declared as Free, no proper license given.

Round Flat Icons with Noisy Effect in Retro Colors

round icons social
Creator: Onextrapixel
License: Free for personal and commercial use.

Vacation Vector Icons Set for the Holidays

summer icons
Creator: Vectorportal
License: Free for personal and commercial use.

Sunnycons – 30 Flat UI Icons for Sketch (incl. PNG)

sunny icons
Creator: LoveUI
License: Free for personal and commercial use.

50 E-Commerce Icons in Flat and Long Tailed Shadow Style

icons for ecommerce
Creator: Vecteezy
License: Free for personal and commercial use.

Apple Watch Free Screen Icons

apple icons
Creator: Ahmed Barakat
License: Attribution.

40 Sleeky Web Icons for your Blogs and Websites

flat social media
Creator: Ess Kay
License: Attribution Non-commercial.

64 Free Flat Android Settings Icons (AI)

android icons
Creator: Ess Kay
License: Attribution Non-commercial.

50 Free Slim Rounded Long Shadow Web & Android Icons

slim rounded icons
Creator: Ess Kay
License: Attribution Non-commercial.

40 Bubbly Icons – Social Media Icons (AI + PNG)

40 bubbly icons
Creator: Ess Kay
License: Attribution Non-commercial.

Camping Outdoor Icons

camping icons
Creator: Jason Kendall
License: Declared as Free, no proper license given.

20 Square Icons

square icons
Creator: flat-icons
License: Declared as Free, no proper license given.

Business Flat Icons (Free Vector)

business icons
Creator: Yuri Lebedenko
License: Declared as Free, no proper license given.

Sunday Icons

sunday icons
Creator: Abhimanyu Rana
License: Declared as Free, no proper license given.

88 Flat Social Media Icons

flat social icons
Creator: Matej Dumancic
License: Declared as Free, no proper license given.

Free Icon Set

line style icon set
Creator: Taras Shypka
License: Free for personal and commercial use.

Winter Icon Set

winter icons
Creator: Tamara
License: Declared as Free, no proper license given.

Summer Icons

summer icon set
Creator: Tamara
License: Declared as Free, no proper license given.

20 Social Media Icons

social icons
Creator: alienvalley
License: Declared as Free, no proper license given.

Simple Flat Icons

flat pictograms
Creator: alienvalley
License: Declared as Free, no proper license given.

100 Free Unigrid Vector Icons

unigrid icons
Creator: icojam
License: free to use in non-commercial projects only.

100 iOS 8 Icons

100 ios icons
Creator: iconsmind
License: Declared as Free, no proper license given.

100+ Free Icons (AI + PSD)

outline set of icons
Creator: Saturized Digital Agency.
License: Declared as Free, no proper license given.

20 Blackberry Icons – PSD

blackberry icons
Creator: Ghani Pradita.
License: Declared as Free, no proper license given.

Simple Line Icons 2 – 100+ Free Icons

lined icons
Creator: Mirko Monti
License: Declared as Free, no proper license given.

Free Touch Interface Icons – 100% Vectors

touching gestures
Creator: ewebdesign and Freepik
License: Declared as Free, no proper license given.

Bollhavet Free 74 Flat Line Icons

blue ine icons
Creator: Jonas Lampe Persson
License: Declared as Free, no proper license given.

Line Icons: 12000 Free Outline Icons

free outlined icon set
Creator: iconshock
License: Declared as Free, no proper license given.