Droplets, ComplementSoft look to provide Web services interfaces:

"With all the attention being paid to Web services primarily focused on back-end infrastructure, very little attention has been paid thus far to the user interfaces that will be required to support next-generation applications based on these services. With that issue in mind, two companies, ComplementSoft and Droplets, are seeking to provide more robust browserlike user interfaces than today's Internet Explorer or Netscape Navigator."