Add Developer Marketing Agencies section (#4)

* Add Developer Marketing Agencies section

New section with 21 curated agencies and consultancies specializing
in marketing to developer audiences, placed between Events and
Conferences and Case Studies.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add plug.dev to Sponsorship Marketplaces

Developer influencer marketing platform connecting devtool companies
with creators across YouTube, Twitter/X, LinkedIn, and newsletters.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Merge Carbon Ads into BuySellAds entry

Carbon Ads is a product of BuySellAds, not a separate company.
Consolidate into a single entry to avoid duplication.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Remove duplicate EveryDeveloper link to fix awesome-lint

EveryDeveloper already appears in Blogs and Newsletters.
Removing from Agencies to resolve double-link lint error.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Split Video and Podcasting into tools and shows

Rename section to Video and Streaming Tools (production tools only).
Move Scaling DevTools and Community Pulse podcasts into a renamed
Blogs, Newsletters, and Podcasts section alongside other ongoing
publications.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add 5 developer newsletters with sponsorship availability

Quastor (backend engineering), iOS Dev Weekly, Last Week in AWS,
CSS Weekly, and Kotlin Weekly. Fills gaps in iOS, cloud, CSS, Kotlin,
and backend coverage.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add daily.dev Squads to Content Marketing Platforms

Developer-focused group publishing feature for creating communities
around topics, projects, or teams.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add Picks and Shovels book, DORA and RedMonk to Market Research

Fills gaps in Books (latest AI-era developer marketing guide) and
Market Research (two widely cited industry reports).

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: nimrodkra

README.md

@@ -21,19 +21,19 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [Analytics and Attribution](#analytics-and-attribution)
 - [Market Research](#market-research)
 - [Social Media for Developers](#social-media-for-developers)
-- [Video and Podcasting](#video-and-podcasting)
+- [Video and Streaming Tools](#video-and-streaming-tools)
 - [Events and Conferences](#events-and-conferences)
+- [Developer Marketing Agencies](#developer-marketing-agencies)
 - [Case Studies](#case-studies)
 - [Books](#books)
-- [Blogs and Newsletters](#blogs-and-newsletters)
+- [Blogs, Newsletters, and Podcasts](#blogs-newsletters-and-podcasts)
 - [Guides and Frameworks](#guides-and-frameworks)
 
 ## Developer Advertising Platforms
 
 *Paid ad networks and platforms for reaching developer audiences.*
 
-- [Carbon Ads](https://www.carbonads.net) - Ad network placing small text and image ads on developer and design websites.
-- [BuySellAds](https://www.buysellads.com) - Ad marketplace connecting advertisers with developer and tech publisher inventory.
+- [BuySellAds](https://www.buysellads.com) - Ad marketplace connecting advertisers with developer and tech publisher inventory, also operates the Carbon Ads network.
 - [daily.dev Ads](https://business.daily.dev) - Native advertising platform for reaching developers through in-feed and email digest placements across the daily.dev network.
 - [EthicalAds](https://www.ethicalads.io) - Privacy-focused ad network for developer sites, run by the team behind Read the Docs.
 - [Stack Overflow Advertising](https://stackoverflow.co/advertising) - Advertising products targeting developers by technology tags on Stack Overflow.
@@ -49,6 +49,7 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [Passionfroot](https://www.passionfroot.me) - Platform for booking sponsorships with developer content creators and newsletters.
 - [AdvertiseCast](https://www.advertisecast.com) - Podcast advertising marketplace with tech and developer show inventory.
 - [Podcorn](https://podcorn.com) - Marketplace connecting brands with podcast hosts for integrated sponsorships.
+- [plug.dev](https://plug.dev) - Platform connecting developer tool companies with developer influencers for campaigns across YouTube, Twitter/X, LinkedIn, and newsletters.
 
 ## Developer Newsletters for Sponsorship
 
@@ -66,6 +67,11 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [Hacker Newsletter](https://hackernewsletter.com) - Weekly curated digest of the top stories from Hacker News.
 - [Software Lead Weekly](https://softwareleadweekly.com) - Weekly newsletter for engineering managers and technical leaders.
 - [This Week in React](https://thisweekinreact.com) - Weekly newsletter covering React, React Native, and the surrounding ecosystem.
+- [Quastor](https://www.quastor.org) - Backend engineering newsletter covering system design, data engineering, and distributed systems.
+- [iOS Dev Weekly](https://iosdevweekly.com) - Hand-picked roundup of the best iOS development links delivered weekly.
+- [Last Week in AWS](https://www.lastweekinaws.com/newsletter) - Weekly newsletter covering AWS news, changes, and cloud infrastructure updates.
+- [CSS Weekly](https://css-weekly.com) - Weekly roundup of CSS articles, tutorials, experiments, and tools.
+- [Kotlin Weekly](http://www.kotlinweekly.net) - Weekly newsletter covering Kotlin development, libraries, and ecosystem news.
 
 ## Content Marketing Platforms
 
@@ -79,6 +85,7 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [DZone](https://dzone.com) - Developer knowledge platform with community-contributed articles on Java, DevOps, and cloud.
 - [InfoQ](https://www.infoq.com) - Technology media platform covering software development practices and architecture.
 - [SitePoint](https://www.sitepoint.com) - Web development publisher with tutorials, books, and community forums.
+- [daily.dev Squads](https://docs.daily.dev/docs/squads/creating-your-squad) - Group publishing feature on daily.dev for creating developer-focused communities around topics, projects, or teams.
 
 ## Newsletter Platforms
 
@@ -202,6 +209,8 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [State of JS](https://stateofjs.com) - Annual survey tracking JavaScript ecosystem trends, frameworks, and developer satisfaction.
 - [State of CSS](https://stateofcss.com) - Annual survey on CSS features, tooling, and developer preferences.
 - [Evans Data Developer Survey](https://evansdata.com) - Developer population research covering global workforce trends and technology adoption.
+- [DORA State of DevOps Report](https://dora.dev) - Google's annual research on DevOps practices, team performance, and software delivery metrics.
+- [RedMonk Programming Language Rankings](https://redmonk.com/sogrady/category/programming-languages/) - Quarterly language popularity rankings based on GitHub and Stack Overflow activity.
 
 ## Social Media for Developers
 
@@ -214,18 +223,16 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [Typefully](https://typefully.com) - Writing and scheduling tool for crafting Twitter/X threads and LinkedIn posts.
 - [Buffer](https://buffer.com) - Social media scheduling and analytics platform for managing multi-channel posting.
 
-## Video and Podcasting
+## Video and Streaming Tools
 
-*Tools and shows for creating developer-focused video and audio content.*
+*Tools for creating developer-focused video and audio content.*
 
 - [Loom](https://www.loom.com) - Screen and video recording tool commonly used for developer product demos and walkthroughs.
 - [OBS Studio](https://obsproject.com) - Free open source software for video recording and live streaming.
 - [Descript](https://www.descript.com) - Audio and video editor with AI transcription and text-based editing workflow.
 - [Riverside](https://riverside.fm) - Remote podcast and video recording platform with separate high-quality audio tracks.
 - [StreamYard](https://streamyard.com) - Browser-based live streaming studio for webinars and developer events.
 - [Transistor](https://transistor.fm) - Podcast hosting platform with analytics and support for multiple shows under one account.
-- [Scaling DevTools](https://www.scalingdevtools.com) - Podcast with interviews on building and growing developer tool companies.
-- [Community Pulse](https://www.communitypulse.io) - Podcast covering community management and developer advocacy topics.
 
 ## Events and Conferences
 
@@ -240,6 +247,31 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [Collision](https://collisionconf.com) - Technology conference in Toronto with developer and SaaS-focused programming.
 - [All Things Open](https://allthingsopen.org) - Open source technology conference covering community, adoption, and developer tooling.
 
+## Developer Marketing Agencies
+
+*Agencies and consultancies specializing in marketing to developer audiences.*
+
+- [Catchy](https://catchyagency.com) - Full-cycle developer marketing agency offering GTM strategy, demand generation, and developer experience services.
+- [Draft.dev](https://draft.dev) - Technical content agency with a network of 300+ engineer-writers producing blog posts, tutorials, and video for developer tool companies.
+- [Dev Spotlight](https://devspotlight.com) - Enterprise-focused technical content production covering blogs, whitepapers, ebooks, and tutorials.
+- [DevRel Bridge](https://devrelbridge.com) - Fractional DevRel agency providing content, community, events, and DX strategy without long-term contracts.
+- [Hoopy](https://hoopy.io) - DevRel consultancy offering strategy, audits, training, and content production, known for running the DevRelCon event series.
+- [DevRel.Agency](https://devrel.agency) - Developer experience audits and developer-led growth consulting, also runs the annual State of Developer Relations survey.
+- [Devrella](https://devrella.com) - Boutique agency focused on developer marketing, branding, and community adoption for developer-first SaaS startups.
+- [Growtika](https://growtika.com) - Developer-focused marketing agency specializing in B2D strategy, SEO, and technical content.
+- [Freeman & Forrest](https://freemanandforrest.com) - Tech influencer marketing agency with an outcomes-based pricing model for event promotion and social campaigns.
+- [Literally.dev](https://literally.dev) - Agency specializing in technical documentation, example applications, and developer adoption strategy.
+- [Hackmamba](https://hackmamba.io) - Technical content marketing agency with a focus on documentation-driven growth and developer SEO.
+- [ércule](https://ercule.com) - Content strategy agency focused on SEO, analytics, and editorial workflows for technology companies.
+- [Wizard on Demand](https://wizardondemand.com) - Boutique agency offering content marketing and paid media services for developer tools.
+- [Campfire Labs](https://campfirelabs.co) - Agency producing technical thought leadership content for technology companies.
+- [Growth Plays](https://growthplays.com) - GTM strategy and content consultancy for technical B2B SaaS companies.
+- [Infrasity](https://infrasity.com) - Technical content marketing agency offering startup-friendly pricing for B2B SaaS.
+- [Open Strategy Partners](https://openstrategypartners.com) - B2B technology marketing agency specializing in messaging, content strategy, and thought leadership.
+- [DeveloperMedia](https://developermedia.com) - Media company focused on reaching developer decision-makers through advertising and audience research.
+- [Meridian DevRel](https://meridiandevrel.com) - Fractional DevRel leadership and content creation with tiered monthly packages.
+- [Edify Content](https://edifycontent.com) - Technical content agency with a credit-based pricing model focused on landing pages and lead generation.
+
 ## Case Studies
 
 *Published growth stories and analyses of developer marketing strategies.*
@@ -263,8 +295,9 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [Developer, Advocate!](https://www.packtpub.com/en-us/product/developer-advocate-9781789138740) - Conversations with developer advocates about building careers in DevRel, edited by Geertjan Wielenga.
 - [Developer Relations](https://www.devrelbook.com) - Caroline Lewko and James Parton's guide to building and growing a developer relations program.
 - [Getting Started in Developer Relations](https://www.samjulien.com) - Sam Julien's ebook on breaking into and succeeding in developer relations.
+- [Picks and Shovels](https://www.strategicnerds.com/book) - Prashant Sridharan's guide to marketing developer tools during the AI era.
 
-## Blogs and Newsletters
+## Blogs, Newsletters, and Podcasts
 
 *Ongoing publications about developer marketing strategy and practice.*
 
@@ -276,6 +309,8 @@ The usual marketing tactics don't work on developers. They decide what to use by
 - [DevRelX](https://www.devrelx.com) - Research and articles on developer relations trends, tools, and program strategy.
 - [Every Developer](https://everydeveloper.com) - Developer marketing strategy blog and resources by Adam DuVander.
 - [Developer Avocados Weekly](https://developeravocados.net) - Weekly newsletter curating developer advocacy and DevRel resources.
+- [Scaling DevTools](https://www.scalingdevtools.com) - Podcast with interviews on building and growing developer tool companies.
+- [Community Pulse](https://www.communitypulse.io) - Podcast covering community management and developer advocacy topics.
 
 ## Guides and Frameworks