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Aim of this repository is , You never miss the deadline.
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All are categorized according to their "Registration Date Begin".
Kindly note down, All the dates are in approx. it's based on previous year tmeline on their "Official Website" . Always visit their Official Website and confirm the timeline and you can also update the timeline here, if you want then, make a issue and push a PR .
Some popular OS - Programs are marked by ⭐ .
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
------- | -------- | ----------- | --------- | ----- | ------- |
| ⭐ MLH Fellowship (Pre-program & Open source) | Yes | Jan - Apr | Before the deadline | Jan-4th | Fellowship | Certificate, Swags & more |
| ⭐ Linux Kernel Mentorship Program | Yes | Mar - May | mid-Jan | late-Feb | Mentorship Program | Certificate |
| ⭐ Hyperledger Mentorship Program | Yes | Jun - Aug(Full-Time) Jun - Nov(Part-time) | Jan-28 | Mar-10 | Mentorship Program | Certificate |
| ⭐ Outreachy | Yes | May - Aug | late Jan | late Feb | Internship | Certificate |
| FOSSEE Semester-long Internship | Mar - Apr | Jan 08 | Feb 05 | Internship | Certificate | |
| Open Mainframe Project (Linux Foundation) | Mar - May | mid-Jan | mid-Feb | OS-Program | Certificate | |
| Cross Winter of code | Feb - Mar | Jan 25 | Feb 10 | University OS Program | Certificates & swags |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ Google Summer of Documentation-(Docs) | Yes | Apr - Nov | 9 Feb | 26 Mar | OS-Program | Certificate |
| Mircosoft:-Reiforcement Learning Open Source Fest | Yes | May - Aug | 1 Feb | 1 Mar | OS-Program | Certificate |
| DataONE Summer Internship Programme | May - Jul | 22 Feb | 25 Mar | Internship | Certificate | |
| GirlScript Summer of code-(GSSoC) | Mar - May | Feb | Mar | OS-Program | Prizes, swag rewards and internship opportunities for winners |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ Google Summer of Code-(GSoC) | Yes | Mar - Sept | early Mar | mid Apr | OS-Program | Certificate |
| Google Summer of Earth Engine-(SoEE) | Yes | May - July | 15 Mar | 15 Apr | OS-Program | Certificate |
| Igalia Coding Experience Program | Yes | 1 Mar | end of Apr | OS-Program | Certificate | |
| RAILS GIRLS SUMMER OF CODE-(RGSOC) | Yes | Jun - Sep | 02 Mar | 30 Mar | OS-Program | Certificate |
| Processing Foundation Fellowships | Yes | Mar | 2 Apr | Fellowship | Certificate | |
| TOR Summer of Privacy | Yes | Early Mar | late Mar | OS-Program | Certificate | |
| X org Foundation-(EVOC) | 9 Mar | 13 Apr | OS-Program | Certificate |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ (LFN)-Linux Foundation Mentorship Program | Yes | Jun - Aug(full-time) & Jun - Nov(part-time) | 15 Apr | 10 May | Mentorship Program | Certificate |
| ⭐ Linux Kernel Mentorship Program | Yes | Jun 1 - Aug 31 | mid Apr | late-May | Mentorship Program | Certificate |
| ERPNext Summer of Code | Yes | May - Aug | 3 Apr | 14 Apr | OS-Program | Certificate |
| FOSSEE Summer Fellowship | 17 Apr | 05 May | University Fellowship | Certificate | ||
| Cross Research Experience Program | mid Apr | before May 10 | OS-Program | Certificate | ||
| Open Mainframe Project -Linux Foundation | Yes | mid Apr | mid May | OS-Program | Certificate |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ MLH Fellowship (Pre-program & Open source) | Yes | May - Aug | Before the deadline | before 10 May | Fellowship | Certificate, Swags & more |
| Alibaba Summer of code | Yes | Aug | 25 May | 30 Jun | OS-Program | Certificate |
| Tencent Rhino-bird Open-source Training Program | Yes | before Jun | OS-Program | Certificate | ||
| Summer of Open Souce Promotion Plan | Yes | Jul - Nov | 24 May | 13 Jun | OS-Program | Certificate |
| OSS Summer of Innovation | May - Jul | 1 May | 5 May | University OS Program | Swags & Prizes For Winners | |
| Hack Club SRM Summer of Code (HCSSoC) | Jun - Jul | 18 May | 23 Jun | University OS Program | Certificates & swag rewards | |
| OSS World Challenge | The challenge opens every "May" then close by "September" | Competitions | Prizes for winners | |||
| Bountiful Open Source Summer-BOSS | May - Aug | before 15 Aug | Competitions | Prizes For Winners & top performers |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ Open Summer of Code-(OSoC) | Yes | Jul | Jun | early-Jul | OS-Program | Certificate |
| ACM MM Open Source Software Competition | Early Jun | 25 Jun | Competitions | Prizes For Winners | ||
| PClub Summer Of Code | Early Jun | late Jun | OS-Program | |||
| Script Fellowship Program | Aug - Nov | 1 Jun | 25 Jul | Fellowship | Certificate |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ Open Mainframe Project-Linux Foundation | Yes | mid Jul | mid Aug | OS-Program | Certificate | |
| ⭐ Linux Kernel Mentorship Program | Yes | Sep 1 - Nov 30 | mid-Jul | late-Aug | Mentorship Program | Certificate |
| Witnet Summer of Code Program-(WSoC) | before 15 Jul | OS-Program | Certificate | |||
| Mozilla Winter of Security | 29 Jul | 15 Sep | OS-Program | Certificate |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ Outreachy | Yes | Dec to Mar | mid Aug | late Sept | Internship | Certificate |
| Girlscript winter of code (docs) | Sep - Nov | Early Aug | late Aug | OS - Program | Swag rewards for top performer, Certificate |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ MLH Fellowship (Pre-program & Open source) | Yes | Sep - Dec | Before the deadline | before 13 Sept | Fellowship | Certificate, Swags & more |
| ⭐ Hacktober Fest by Digital Ocean | Oct | Sep | Oct | Competitions | Swag Rewards | |
| GNOME Internship Program | Yes | Dec - Mar | 1 Sep | 1 Oct | Internship | |
| Script Winter of code-(SWoC) | Nov - Mar | 10 Sep | 10 Nov | OS - Program | Prizes, swag rewards, Certificate | |
| Semester Long Projects (SLoP by DA-IICT) | Sep - Nov | 15 Sep | late Sept | University OS Program | Certificates & swag rewards | |
| Google Code-in (GCI) | Timeline | before Oct | Competitions | Prizes for winners |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| IIIT-Kalyani Winter of code 2.0 | Dec - Feb | 1 Oct | 7 Nov | Certificates & swag rewards | ||
| Delta Winter of Code-(DWoC) | Nov - Jan | 19 Oct | 22 Nov | University OS Program | Certificates & swag rewards | |
| NJACK Winter Of Code | Dec - Jan | 22 Oct | late Nov | University OS Program | Certificates & swag rewards |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ Foss Asia Codeheat | Nov - Jan | runs from Nov 10 | 11 May | Competition | Cash Prizes For Winners | |
| Winter of code by NSEC | Dec - Jan | 20 Nov | 6 Dec | University OS Program | Certificates & swag rewards | |
| Kharagpur Open Source Society-(KWoC) | Dec - Jan | 26 Nov | 6 Dec | University OS Program | Certificates & swag rewards | |
| DevScript Winter of code | Dec - Mar | 30 Nov | 25 Dec | University OS Program | Certificates & swag rewards |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ Season of KDE | Jan - Mar | 15 Dec | 15 Jan | OS - Program | ||
| JGEC Winter of code | Dec -Feb | 7 Dec | 7 Dec | University OS Program | Certificates & swag rewards | |
| 24 Pull Requests | Dec | Send 24 pull requests between December 1st and December 24th | Competitions |
| Name | Stipend | Timeline | Registration Date Begin (Approximately) | Deadline (Approx.) | Type | Awards |
|---|---|---|---|---|---|---|
 |
-------- | -------- | ---------------- | -------- | ----- | -------- |
| ⭐ Free Software Foundation (FSF) Intership Program | winter: December 8 summer: May 10 Fall: September 2. spring: November 29 | Intership | ||||
| ⭐ (CNCF)-Community Bridge Mentorship Program | Yes | Summer - (CNCF) participates in LFX Mentorship (ex-CommunityBridge), GSOC , GSOD , CROSS Research Experience Program | ||||
| ⭐ Redox Summer of code | Yes | In Summer | ||||
| ⭐ Julia Season of Contribution-(JSOC) | Yes | It takes part in - GSOC & GSOD | OS - Program | Certificate | ||
| ⭐ Foss Asia Intership Program | Yes | Whole Year | OS - Program | |||
| John Hunter Matplotlib Summer Fellowship | Yes | Summer - 3 monthes | Fellowship | |||
| Radare Summer of Code | Yes | RSoC Project take part in GSOC | ||||
| Summer of Haskell | Yes | SOH projects take part in GSOC | ||||
| The X.Org Endless Vacation of Code-(EVoC) | Yes | EVoC mentorship can be initiated at any time during the calendar year | ||||
| RARE Technologies Student Incubator Programme | Yes | Poject take part in GSOC & It took place in Summer | scholarships and financial rewards | |||
| Vectorised IO | Yes | Not found | ||||
| Snowplow | Yes | Not found | ||||
| RubyMe Mentorship Program | Yes | Not found | Mentorship | |||
| Kubernetes Shadows Program | Shadows are selected via the Release Team Shadow Application, which usually opens up around the end of a release/beginning of the next release | |||||
| Millennium Fellowship | Applications for this is open for whole year except Aug to Nov | Fellowship | ||||
| Microsoft Learn Student Ambassador Program | Application form is open throughout the year | |||||
| OpenCode IIITA | starting in October for student | University OS Program | Certificates & swag rewards | |||
| Tweag I/O Summer Internship | Not found | Internship | ||||
| Segment Open Fellowship | Not found | Fellowship | ||||
| Sanscript Autumn of Open Source | Not found | University OS Program | Certificates & swag rewards | |||
| RGSOC | Not found | |||||
| Quantopian Open | Not found | Competitions | Cash prizes for winners | |||
| OWASP SOC | Not found | |||||
| MDG Winter of Code | Not found | |||||
| ICFOSS Fellowship Programme | Not found | Fellowship | ||||
| Halite AI Bot Challenge | Not found | Competitions | Swag rewards for winners | |||
| HackinCodes Contributor Hack | Not found | Competitions | Prizes, swag rewards, Certificate | |||
| Data Driven Competition | Not found | Competitions | Cash Prizes For Winners | |||
| (DAWOC)-DA-IICT Winter of Code | Not found | |||||
| Cats winter of code | Not found | |||||
| Educational Externship Track | Not found | Externship | ||||
| Data Observation National of Earth | Not found | |||||
| SOCIS | Not found | |||||
| Open Innovation Project | Not found | |||||
| Open Source Track Explorer | Not found | |||||
| Free Software Observation | Not found |
- (CNCF)-Community Bridge Mentorship Program
- Cross Research Experience Program
- Cross Winter of code
- Cats winter of code
- Data Driven Competition
- Delta Winter of Code-(DWoC)
- DevScript Winter of code
- DataONE Summer Internship Programme
- (DAWOC)-DA-IICT Winter of Code
- Data Observation National of Earth
- ERPNext Summer of Code
- Educational Externship Track
- Foss Asia Codeheat
- Foss Asia Intership Program
- Free Software Foundation (FSF) Intership Program
- FOSSEE Summer Fellowship
- FOSSEE Semester-long Internship
- Free Software Observation
- Google Summer of Code-(GSoC)
- Google Summer of Documentation-(Docs))
- Google Summer of Earth Engine-(SoEE)
- GNOME Internship Program
- GirlScript Summer of code-(GSSoC)
- Girlscript winter of code (docs)
- Google Code-in (GCI)
- Hyperledger Mentorship Program
- Hacktober Fest by Digital Ocean
- Hack Club SRM Summer of Code (HCSSoC)
- Halite AI Bot Challenge
- HackinCodes Contributor Hack
- MLH Fellowship (Pre-program & Open source)
- Mircosoft:- Reiforcement Learning Open Source Fest
- Millennium Fellowship
- Microsoft Learn Student Ambassador Program
- Mozilla Winter of Security
- MDG Winter of Code
- Outreachy
- Open Mainframe Project (Mentorship Program) (Linux Foundation)
- Open Summer of Code-(OSoC)
- OSS Summer of Innovation
- OpenCode IIITA
- OSS World Challenge
- OWASP SOC
- Open Source Track Explorer
- Open Innovation Project
- Redox Summer of code
- Radare Summer of Code
- RARE Technologies Student Incubator Programme
- RubyMe Mentorship Program
- RGSOC
- Season of KDE
- Summer of Haskell
- Snowplow
- Summer of Open Souce Promotion Plan
- Script Winter of code-(SWoC)
- Script Fellowship Program
- Semester Long Projects (SLoP by DA-IICT)
- Sanscript Autumn of Open Source
- Segment Open Fellowship
- SOCIS
- Tencent Rhino-bird Open-source Training Program
- The X.Org Endless Vacation of Code-(EVoC)
- TOR Summer of Privacy
- Tweag I/O Summer Internship
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