When compared to last year’s icon design trends, not much has changed really. Year-on-year, icon trends have always evolved, but not this year. Flat design, iOS line-styled icons and Material Design continue to inspire heavily this year’s icon trends. SVG has continued to rise in popularity, as have icon sets created with Sketch.app.

One major difference has been the decrease in popularity of icon fonts. There has been a lot of discussion about them in the design community over the past month or so, especially from Tyler Sticka (Seriously, Don’t Use Icon Fonts) and Ben Frain (Seriously, Use Icon Fonts), we’ll let you decide whether or not you choose to use them.

We have also only included those larger, more complete sets. Some even have as many as 400 different icons! Most of the sets are available in either PSD, AI, EPS, SVG or Sketch formats, but there are also a few, as mentioned, icon fonts and some pure CSS sets as well.

To help you find the set you’re looking for quicker, we’ve categorized the icons into the following sections: Flat Icon Sets, Pure CSS Icons, Icon Fonts, Line Icon Sets, Block/Solid Icon Sets, Material Design Icon Sets, and finally a small selection of Specialized Icon Sets.

Flat Icon Sets

Flat Color Icon Pack (5,000 Icons, PNG, EPS & SVG)

Kvasir Icon Set (180 Icons, PNG, PSD)

Flat Color Icons (312 Icons, SVG).

Media Flat Outline Icons (20 Icons, PSD, AI, EPS)

The Flat Superheroes & Villains Icon Set (100 Icons, PNG & SVG)

Cinema Icon Set (200 Icons, SVG)

RetinaIcon Set (200 Icons, AI)

If you’re looking for more free flat icon sets, take a look at this collection: Top 50 Free Flat Icon Sets.

Pure CSS Icon Sets

icono Pure CSS Icon Set (130 Icons, CSS)

Fileicon – Collection of pure CSS file icons.

Transformicons – Animated icons, symbols and buttons using SVG and CSS.

Free Icon Fonts

UXPin Icon Set (80 Icons, SVG, PSD, PNG, AI & Icon Font)

PrestaShop Icon Pack (EPS & Icon Font)

Epic Outlines Font (PSD, SVG & Icon Font)

twig Simple Open-Source Lineart Iconset (64 Icons, SVG & Icon Font)

The Weather Set (208 Icons, Icon Font)

City Icon Set (70 Icons, AI, EPS, PDF, PSD, SVG, Icon Font)

Lightwing Icon Set (60 Icons, Icon Font)

System Icons (100 Icons, PSD, SVG, EPS, AI, Icon Font)

If you’re looking for more free icon fonts, take a look at this collection: Top 50 Free Icon Fonts for Web Design.

Line Icon Sets

Responsive Line Icons (100 Icons, AI, EPS, SVG & PSD)

Art Thin Line-Style Icons (50 Icons, AI).

Lineal Sport Icons Pack (100 Icons, SVG & PNG)

Blunicons Essentials Icons (60 Icons, AI, Sketch, SVG & PNG).

One Line Startup Icons (100 Icons)

Subway Icon Set for iOS & Windows Phone (306 Icons, AI & PSD)

Lynny Icons (470 Icons, EPS, AI & PNG)

Nanoline Icon Set (200 Icons, EPS, AI & SVG)

Amenities icon Set (50 Icons, PSD)

Icons Templates (24 icons, PSD)

SomIcons (152 Icons, EPS, PNG & SVG)

Evil Icons (60 Icons, SVG)

Line Icons (170 Icons, PSD, AI & EPS)

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

Swifticons Icon Set (92 Icons, AI, Sketch, PNG, SVG, EPS, PDF)

Block/Solid Icon Sets

DOUX Icon Set (40 Icons, Sketch)

Communication Icon Set (15 Icons, AI, SVG)

Micons (231 Icons, AI, SVG)

Birply Icons Vol2 (40 Icons, AI & SVG)

Icon Set by Sonia Dunaieva (90 icons, Sketch)

Barker Icon Set (56 Icons, PNG, AI & EPS)

Blockie Icon Set (48 Icons, PSD)

Retro Icon Set (120 Icons, EPS)

Glyphs

Boldo Icon Set (70 Icons, PSD & AI)

Geoph Icon Set (80 Icons, PSD & AI)

Material Design Icon Sets

Material Design Icons with Bounds (250 Icons, Sketch)

Material Design Powerpoint & Keynote Icons (425 Icons, PPTX & KEY)

Google Material Icons (Sketch)

If you’re looking for more free Material Design icon sets, take a look at this collection: 20 Free Material Design UI Templates & Icon Sets.

Specialized Icon Sets

Animaticons, Beautiful, Customizable Animated Icons (GIF)

104×3 Marketing Swifticons (EPS, PNG & SVG)

Office & Business Icon Pack (92 Icons, AI, EPS, PSD, PDF, PNG, SVG)

Outline & Solid Purchase/Buy Icons (16 Icons, AI & EPS)

Ecommerce Icon Set (18 Icons, AI, EPS, SVG)

SEO Icons (50 Icons, PSD)

Space Icon Set (50 Icons, SVG & PNG)

Zen, Minimal Outline Icons (12 Icons, PSD)