---
title: "Core Duo - Free Icons Set - 998 customizable PNGs, SVGs, PDFs"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/core-duo-free
canonical_url: "https://www.streamlinehq.com/icons/core-duo-free"
summary: "[Free + Open-source] Core is the Helvetica of icons. The Free Duo variant uses dual tones for a sophisticated color approach. Licensed under the Creative Commons - CC BY 4.0"
---

# Core Duo - Free

[Free + Open-source] Core is the Helvetica of icons. The Free Duo variant uses dual tones for a sophisticated color approach. Licensed under the Creative Commons - CC BY 4.0

License: Free

## Categories

- [Interface Essential](/icons/core-duo-free/interface-essential)
- [Money Shopping](/icons/core-duo-free/money-shopping)
- [Computer Devices](/icons/core-duo-free/computer-devices)
- [Programming](/icons/core-duo-free/programming)
- [Phone](/icons/core-duo-free/phone)
- [Entertainment](/icons/core-duo-free/entertainment)
- [Food Drink](/icons/core-duo-free/food-drink)
- [Health](/icons/core-duo-free/health)
- [Images Photography](/icons/core-duo-free/images-photography)
- [Mail](/icons/core-duo-free/mail)
- [Map Travel](/icons/core-duo-free/map-travel)
- [Culture](/icons/core-duo-free/culture)
- [Nature Ecology](/icons/core-duo-free/nature-ecology)
- [Shipping](/icons/core-duo-free/shipping)
- [Work Education](/icons/core-duo-free/work-education)
- [Artificial Intelligence](/icons/core-duo-free/artificial-intelligence)

## Example icons

- [Add 1](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/add-1-bxam3te2cn2d5lpq0p6zc.png/add-1-m2ph7sbnn29sa6zz77bz3.png?_a=DATAiZkSZAA0)
- [Add Bell Notification](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/add-bell-notification-qq4eqmfe31pbbvzz87m6i.png/add-bell-notification-n3x96kw8ptrqy0b85lqyq.png?_a=DATAiZkSZAA0)
- [Add Circle](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/add-circle-6vkcillephw7q2bwm82rng.png/add-circle-wygwhb4k6rf9s1sbjk9c6.png?_a=DATAiZkSZAA0)
- [Add Layer 2](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/add-layer-2-9kplgvlmhylypqoizybr1r.png/add-layer-2-yo989jot1rflwl1f1ezepa.png?_a=DATAiZkSZAA0)
- [Add Square](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/add-square-r66w6419lgqzwveghx8me.png/add-square-1gvnc30fi99a66uth7uroi.png?_a=DATAiZkSZAA0)
- [Alarm Clock](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/alarm-clock-ubf7053g379g9fhp1torwp.png/alarm-clock-pbtxv2av1gs9t60xq0ny6w.png?_a=DATAiZkSZAA0)
- [Align Back 1](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/align-back-1-w79xd25w5zgag23h8q9gl.png/align-back-1-3jvn9nk003nhgoqlud0nhd.png?_a=DATAiZkSZAA0)
- [Align Center](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/align-center-mn8snqcqhkm108xdoyil8ga.png/align-center-umnovx0p4rygktmfeu3i7.png?_a=DATAiZkSZAA0)
- [Align Front 1](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/align-front-1-b0w46nph109qih3kymi5d.png/align-front-1-qv72n0o7qd9mk6mtdm0p6.png?_a=DATAiZkSZAA0)
- [Align Left](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/align-left-c1trev1vrthx8yxgpiwq59.png/align-left-u4zp1sy96xftb7zmpoptth.png?_a=DATAiZkSZAA0)
- [Align Right](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/align-right-5o1x3f4dzh5krlaihxra8.png/align-right-8sqhop57nqidxik8nxpt6.png?_a=DATAiZkSZAA0)
- [Ampersand](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/interface-essential/ampersand-xj3q9wp1xubd4ixj5w79f.png/ampersand-zoy5hya1pv306hvhc7sjq.png?_a=DATAiZkSZAA0)

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