Reactive Streams Implementations Trends (Akka, RxJava, Vert.x, Spring Reactor)

Google trends showing popularity of Reactive Streams Implementations below:

https://trends.google.com/trends/explore?geo=US&q=%2Fm%2F0wx_061,%2Fm%2F0ndx2mr,spring%20reactor,rxjava

1. Akka

2. RxJava

3. Vert.x

4. Spring Reactor

See also : https://en.wikipedia.org/wiki/Reactive_Streams

Java Open Source ERPs / CRMs Trends (Openbravo, APache OFBiz, ADempiere, iDempiere, Compiere, Metasfresh, etc.)

Google trends showing popularity of Java Open Source ERPs / CRMs below:

https://trends.google.com/trends/explore?date=today%205-y&q=%2Fm%2F0gwby7,%2Fm%2F01h7s6,%2Fm%2F0_yfmv6,%2Fm%2F0264f7v,%2Fm%2F02836zp

https://trends.google.com/trends/explore?date=today%205-y&q=adaxa,%2Fm%2F0dsc06v,%2Fg%2F11c6cdwzml,%2Fg%2F11gh3551s9

1. Openbravo
2. OFBiz
3. ADempiere
4. iDempiere
5. Compiere
6. Metasfresh - uses React/Redux
7. Adaxa
8. HeliumV
9. Kuali

Java Open Source CMSs Trends (Alfresco, DSPace, Nuxeo, XWiki, OFBiz, etc.)

Google trends showing popularity of Java Open Source CMSs below:

https://trends.google.com/trends/explore?date=today%205-y&q=%2Fm%2F0264f7v,%2Fm%2F07l2hp,%2Fm%2F08cwpy,%2Fm%2F03c5qw6,%2Fm%2F06mzcg

https://trends.google.com/trends/explore?date=today%205-y&q=%2Fm%2F02w759,%2Fm%2F04gsmk,bloomreach,%2Fm%2F08pcrs,%2Fm%2F0462fc7

https://trends.google.com/trends/explore?date=today%205-y&q=%2Fm%2F0n8_xnd,%2Fg%2F11g9l_tn_b,%2Fm%2F0462fc7,%2Fm%2F063k7f1,%2Fm%2F064n79j

https://trends.google.com/trends/explore?date=today%205-y&q=%2Fg%2F12lnhfzk2,%2Fg%2F11g9l_tn_b,%2Fm%2F0gk_spp

1. Alfresco
2. DSpace
3. Nuxeo
4. XWiki
5. OFBiz
6. BloomReach (Hippo CMS)
7. OpenCMS
8. Jahia
9. Magnolia CMS
10. DotCMS
11. LogicalDOC
12. Ametys
13. Crafter CMS
14. Fedora Commons
15. Enonic
16. OpenWGA

JS Web Frameworks Trends (React, Angular, Vue.js)

Google trends showing popularity of JS Web Frameworks below:

https://trends.google.com/trends/explore?q=%2Fm%2F012l1vxv,%2Fg%2F11c6w0ddw9,%2Fg%2F11c0vmgx5d

1. React
2. Angular
3. Vue.js

API Description Languages Trends (OpenAPI Specification, RAML, API Blueprint)

Google trends show popularity of API Description Languages below:

https://trends.google.com/trends/explore?q=%2Fm%2F010ppjcy,%2Fm%2F01082xym,API%20Blueprint

1. OpenAPI Specification (originally Swagger)
2. RAML (RESTful API Modeling Language)
3. API Blueprint

Software Configuration Management Trends (Ansible, Puppet, SaltStack, Chef, Terraform)

At the moment, Ansible and Terraform are the leaders in Infrastructure as Code.

Google trends show popularity of software configuration management tools below:

https://trends.google.com/trends/explore?date=today%205-y&q=%2Fm%2F03d3cjz,%2Fm%2F0hn8c6s,%2Fm%2F08_7zcp,%2Fm%2F0k0vzjb,%2Fg%2F11g6bg27fp

1. Ansible - Python-based
2. Puppet - Ruby-based
3. SaltStack - Python-based
4. Chef - Ruby and Erlang
5. Hashicorp Terraform - Go-based