--- title: Seven Days of Open Source | daily.dev description: Square Engineering announced a week-long series of open source project releases timed to coincide with Google I/O 2013. Over seven weekdays, they released... canonical: https://daily.dev/posts/seven-days-of-open-source-abtqzujys twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Seven Days of Open Source | daily.dev og:description: Square Engineering announced a week-long series of open source project releases timed to coincide with Google I/O 2013. Over seven weekdays, they released... og:url: https://daily.dev/posts/seven-days-of-open-source-abtqzujys og:image: https://api.daily.dev/og/posts/abTQzUJys.png og:image:alt: Seven Days of Open Source og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Seven Days of Open Source **[Jake Wharton](https://daily.dev/sources/jakewharton)** · 1 min read · 0 upvotes · 0 comments ## Summary Square Engineering announced a week-long series of open source project releases timed to coincide with Google I/O 2013. Over seven weekdays, they released major milestones for seven projects focused on Android and Java development, including OkHttp, Dagger 1.0, Robolectric 2.0, Retrofit 1.0, and Picasso 1.0, among others. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Java Weekly, Issue 642](https://daily.dev/posts/java-weekly-issue-642-4s9ng1xjl) · Baeldung · 1 upvotes · 0 comments --- Tags: [#open-source](https://daily.dev/tags/open-source), [#java](https://daily.dev/tags/java), [#android](https://daily.dev/tags/android) [View this post on daily.dev](https://daily.dev/posts/seven-days-of-open-source-abtqzujys) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Seven Days of Open Source","url":"https://daily.dev/posts/seven-days-of-open-source-abtqzujys","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/seven-days-of-open-source-abtqzujys"},"datePublished":"2026-07-05T07:14:19.864Z","dateModified":"2026-07-05T07:18:53.198Z","description":"Square Engineering announced a week-long series of open source project releases timed to coincide with Google I/O 2013. Over seven weekdays, they released...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7db34ef465c664787fa0a5e1ac631688?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7db34ef465c664787fa0a5e1ac631688?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Jake Wharton","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Jake Wharton","logo":"https://media.daily.dev/image/upload/logos/placeholder.jpg","url":"https://daily.dev/sources/jakewharton"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/seven-days-of-open-source-abtqzujys","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"open-source,java,android","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Jake Wharton","item":"https://daily.dev/sources/jakewharton"},{"@type":"ListItem","position":3,"name":"Seven Days of Open Source"}]} ```